BIOL 111 What causes extinction? A study of mammal species
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First nameLast nameNet IDspecies common namespecies Latin name# countries where foundconservation statusbody size (kg)reproduction rate ( # of offspring per female per year)
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Cui8mc72Black-tailed Prairie DogCynomys ludovicianus3 (limited to North America) LC-NT0.68-1.4 kg 1 litter/year at 3.0-4.9 young/litter
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AlexandraCook12arcWhite-faced capuchinCebus capucinus6-Honduras, Nicaragua, Costa Rica, Panama, Colombia, Ecuador.Least Concern (LC)Up to 3.9 kg1 offspring every 26 months (Twins occur occasionally)
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AmberKnorr9ak61Bactrian camelCamelus bactrianus2 (China and Mongolia)CR600-1000kg1 offspring per 1-2 years
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AndreaDavidson9apd4Gray slender lorisLoris lydekkerianusIndia and Sri LankaLeast Concern 103-172g4 offspring/year
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AndrewGarvey9atgNorthern flying squirrelGlaucomys sabrinus2 (Canada, USA)LC0.11 -0.234 young/litter, 1-2 litter/year
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AnnaWall11aw45Common opossumDidelphis marsupialis21 ( northeast of Mexico to Bolivia; reaching the coast of the South Pacific Ocean to the central coast of Peru)LC~1.4kg5-9 offspring between 1-3 times per year
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AnnemiekeLittle9arllEastern Gray SquirrelSciurus carolinensisEastern United States and CanadaLC400-600g1-2 litters/2-6 young/year
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AnthonyTran 1at2Iberian lynxLynx pardinus1 (Spain)Critically Endangered (CR)Males:~13kg Females:~9kg1 litter per year with 2-4 offspring
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ArunNarasimhan0an11Armoured ratHoplomys gymnurus6 (Honduras, Nicaragua, Costa Rica, Panama, Columbia, Ecuador)LC0.218-0.790kgAverage: 2.1
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AudreyMiro9am82Canadian LynxLynx canadensis2 (Canada & USA)Least Concern (LC)8-11 kg (average weight; not weight range)1 litter/year at an average of 4 cubs/litter, but range from 1-8 cubs/litter
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BlakeWyman12bwCommon wombatVombatus ursinu1: Australia. Found in parts of southern and eastern Australia (including Tasmania) and in the mountain districts as far north as Queensland.VU (Vulnerable) 17-40 kg1 offspring (joey) every 2 years
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BrandonVandermeer8bkv2Nine-banded armadilloDasypus novemcinctus21 (Southern US and most of South America)Least Concern (LC)2.5–6.5 Kg (Max. 10 kg)4
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BrianArthur6bjaEastern ChipmunkTamias striatusSouthern Canada and Eastern United StatesLC1-2 litters/3-5 young/year
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CaitlinArmer11ceeaSnowshoe HareLepus americanus2(Canada and US: Primarily found in the Boreal forest, can range as far north as the shores of Arctic Ocean and in mountain areas as far South as Virginia and New Mexico)Least Concern (LC)0.9-1.8 kgAverage 3-8 young per litter, and can have up to 4 litters/year.
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CarolynWong0cw23IndriIndri indriEastern MadagascarEndangered (E)6-9.5 kg1 offspring every 2-3 years
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CharlineSt. George8gcasWoodland VoleMicrotus pinetorumEastern North America (Nebraska, Kansas, Oklahoma and Texas)LC Least Concern14-37 grams1-4 litters produced each year producing 1-5 young
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CharlotteLaver0CMLBearded sakiChiropotes chiropotes5(Brazil, French Guiana, Guyana, Suriname, Venezuela)LC2-4 kg1 offspring every year (after the age of 4)
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ChelseaMinz0cm36Pygmy marmosetCebuella pygmaea4 (Brazil, Ecuador, Peru, Colombia)LC0.1- 0.2 kg 2 sets of twins/year
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ChristinaDouglas12cd21TigerPanthera tigris14 (Bangladesh, Bhutan, Cambodia, China, India, Indonesia, Laos, Malaysia, Myanmar, Nepal, North Korea, Russia, Thailand, Vietnam)EN (Endangered)Males: 136-423 kg, Females: 91-168kgFemales birth 1-6 cubs, litter size of 2-3 young. One litter every 2-2.5 years, females can give birth to another 1-6 cubs within 5 months of past rearing if cubs die or are killed.
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Connor Kitchen11ck24Egyptian mongooseHerpestes ichneumon~30 (mainly in various African countries)LC (Least concern)1.7-4 kg2-4 offsptring per year
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CoreyBureau11cjb22SpringbokAntidorcas marsupialisSouth Africa, Botswana, Namibia, Southern AngolaLC30-48 kg1 offspring after gestation period of 5-6 months
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DaneMauer-Vakil1vdmGreen monkeyChlorocebus sabaeus3Least Concern (LC)3.9-8.9 kg1
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DanielChadwick9DRC3Arabian oryxOryx leucoryx5 (Oman, Saudi Arabia, Israel, United Arab Emirates, Jordan)VU (Vulnerable)males: 65-90 kg females: 54-70 kg1 offspring per year after 240 day gestation period
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DanikaBrown11djb14Three-toed slothBradypus sp.22 (S.&Central America)LC (2 species), VU (1 species), CR (1 species)41
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DarrenOlevson12do1KoalaPhascolarctos cinereuseastern Australia, from north-eastern Queensland to south-eastern South AustraliaLC(least concerned) based on international standards4–15 kg1 offspring per litter, 1 litter per year, up to 5-6 offsprings per lifetime
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DavidHubbard9dlh1BeaverCastor canadensis6 (Canada, US, Mexico, and introduced to Finland, Argentina, and Russia)LC~20kg (44lbs)~ 2-6 offspring per year (1 litter per year)
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DavidWiercigroch11dw27iliSaguinus imperator3 (Brazil, Peru, Bolivia)LC (Least concern)0.5 kg1-2 offspring per year
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DianeChisholm1dc3GiraffeGiraffa camelopardalisMost African Countries LC830-16001/ 400 to 460 days
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DixonGrant0dg11Common vampire batDesmodus rotundus21 (Mexico, Central America, South America)LC0.057 kg (57 g)~1 a year ( females give birth to one offspring after a gestation period of 7 months)
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EllieSkalosky11ems15Gee's golden langurTrachypithecus geei2 (India and Bhutan)E (endangered)9.5-12kg1/yr
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ElyseQuinney9elqThirteen-lined Ground SquirrelSpermophilus tridecemlineatusCentral Alberta, Saskatchewan, Manitoba, North Texas, New Mexico, Central Ohio to East Colorado, Rocky Mountains and Appalachians/ LC227 grams 1 litter produced each year (3 to 14 squirrels), 2 week mating period
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EmilyShi11qs4European minkMustela lutreola5 (Spain, France, Romania, Ukraine, & Russia)CR0.54-0.824-5 litters (2-7 per litter)
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EmilyWindrem11ecw3Vancouver Island marmotMarmota vancouverensis1 (Canada)Critically Endangered (CR)3 - 7 kgfemales start breeding around 3-4 years of age and have litters of 3-4 pups every other year. ~1.75/year
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ErinFoley13ebfCheetahAcinonyx jubatus25VU (Vulnerable)21 - 72 kg4 offspring at 1 litter/year
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FrédéricTremblay9fdt1Lion-tailed macaqueMacaca silenus1 - IndiaE (Endangered)2 - 10 kg0.22/adult female/year
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GerasimosAngelatos9gmaWest Indian ManateeTrichecus manatus21 Coastal Florida, the Caribbean, and the northwest Atlantic Ocean, as soth as Brazilvulnerable (VU)200-600kg1 offspring every 2 to 5 years. A female typically produces 5-7 offspring
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GregFaulkner8gsfWhite-tailed deerOdocoileus virginianusMost of North America and northern parts of South America. It has also been introduced to New Zealand and parts of Europe such as Finland, Czech Republic and Serbia. 38 subspecies in total. LC Least ConcernMale: 60-130kg Female: 40-90kgFemales give birth to 1-3 fawns per year
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GregorDaly0gd9AardwolfProteles cristataAfrican Plains and BushlandsLC (least concern)9-14kg1 to 5 offspring during rainy season
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GumritCheema9gc16Snow leopardPanthera uncia12E27-55kg1-4 (average 2)
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HaileyIreland12hmiRing-tailed lemurLemur catta1 (Magagascar)Near Threatened (NC)2.2 kg average1-2 offspring/year
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HamyNguyen1thmnSaolaPseudoryx nghetinhensisAnnamite Range that extends through Vietnam and LaosCritically Endangered (CR)Approx 90kgThe Saola is extremely rare and elusive, and there is little information on their reproductive cycles. The species appears to have a fixed breeding season: in Lao, births take place at the beginning of the rains, between April and June. Gestation has been estimated at about 8 months.
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HannaKoposhynska9hhkBald uakariCacajao calvus3 (Peru, Columbia and Brazil)V2.75-3.45 kg1 offspring every 2 years
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Huiqian LilyLi8hl21Red foxVulpes vulpesMany, Northern Hemisphere, Arctic Circle, North Africa, Central America, Asia, some in AustraliaLeast Concern 2.2 to 14 kg (4.9 to 31 lb)Once a year in spring, 4-6 in a litter
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iliannerobredo11ir2Arctic WolfCanis lupus arctosCanadian Arctic, parts of Alaska, and parts of Greenland.LC worldwildlife.org70-175 lbs2 or 3
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JackieHanson11jmh21Honey badgerMellivora capensis35 (Greater part of sub-Saharan Africa to the Middle East) Near Threatened (NT) (South Africa & Morocco), Endangered (E) (Saudi Arabia)5.5kg - 14kg2 offspring at 1 litter/year
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JacobGlantz8jlkgSwamp wallabyWallabia bicolor1 - Australia - found from the northernmost areas of Cape York in Queensland, down the entire east coast and around to south-western Victoria.LCmales: 17 kg females: 13kg1 offspring every 8-9 months
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JennaClarke12jmcSpotted hyenaCrocuta crocutaChad, Central African Republic, southern Sudan, Ethiopia, Kenya, Tanzania, Botswana, Angola, Namibia, and parts of South AfricaLC40-86 kgAfter a gestation period of 90 - 130 days one to three young are born, usually two, in a burrow or den. The young are suckled for 12-18 months, after which time they are nearly full-grown and will join the hunting pack.
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Jenny (Jia Bao)Liu 12jbl1Black ratRattus rattus32 (Mostly Southern Africa,Asia, and European countries)LC0.11kg-0.34kg ~ 5 litters per year
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JohnDixon12jztdEastern WolfCanis Lupus or Canis Lycaon
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JonathanZhang11jlz1FossaCryptoprocta ferox1VU (Vulnerable)6.2-8.64 pups per year
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Juli Kim1jk28Star-nosed MoleCondylura cristata2 - Eastern Canada and Northeastern US LC0.055kgAround 5 per litter, 1 litter a year.
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JuliaSteegstra8js37Northern tamanduaTamandua mexicana12 (southern Mexico, through Central America to western Colombia, Venezuela, Ecuador and northwestern PeruLC (least concern)2 - 7 kg
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KarenMarkwick9kem13AardvarkOrycteropus aferMost of Sub-Saharan AfricaLC (Least Concern)40-65 kg1
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KathleenChayer11KAC10Little brown batMyotis lucifugusMost of North AmericaLC (Least Concern)0.005-0.014kg1 (sometimes 2) Offspring/Year/Female
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Kellie Boyle0klb8Javan RhinocerosRhinoceros Sondaicus1 (Indonesia)Critically Endangered900 - 23000.2 - 0.25 (1 offspring every 4 or 5 years)
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KimberlyLaverty2kjl2Golden jackalCanis aureusNorth and northeast africa, asia minor, southeastern and central europe, middle east, and southeast asiaLC6.3-15kg2-8 pups/year
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KristinMunroe1kmm6Meadow voleMicrotus pennsylvanicus3- Canada, The United States, MexicoLC( least concern)33-65 g4-6 pups(per litter) 8-12 litters a year
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KurtisRomanchuk8kmrWestern Long-Beaked EchidnaZaglossus bruijni1-2 (New Guinea and possibly Australia)CR5-10 kgsFemales lay a single egg, breeding frequency is unknown.
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KylaCarmody0kcscPolar BearUrsus maritimusArtic Vulnerable (VU)352 - 680 kg1 - 3
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KyleMiller11kjlmSilky sifakaPropithecus candidus1 (Madagascar)Critically Endangered 5–6.5 kg1 infant once every two years
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KylieWilson0knw1Red kangarooMacropus rufus1Least ConcernFemale: 18-40kg, Male: 55-85 kg1
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LauraMartelo12mlnmBlack-headed spider monkeyAteles fuscicepsCritically Endangered (CR)Males: 8.89 kg Females 8.8kg1 every 3 years
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LauraBeamish9lvbbMuskratOndatra zibethicusApproximately 30, including most of Canada and the United States, parts of Mexico and South America, and most of Northern Europe and Russia. LC (Least concern)0.6 - 2.0 kg12 to 24 offspring per year. Female muskrats have two to three litters a year of six to eight young.
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LaurenLuchenski11ll59Indian elephantElephas maximus indicusMainland Asia: approx 11 countries Endangered (E)Between 2000-5000kgMay have one offspring every 2.5-4 years
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LeeFerrier9lf15Sumatran orangutanPongo abelii1 - Island of Sumatra in IndonesiaCRmales: 90 kg females: 45 kg 1 offspring every 7-8 years (slowest breeding of all apes)
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LiannaGrice9lg22Richardson's Ground SquirrelSpermophilus richardsonii2 (Northern United States and Southern Canada)Least Concern~750g before hibernation 200-300g right after hibernation8 young/litter, one litter per female per year
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Lily Chan 9lc31MargayLeopardus wiedii20 (Southern Mexico, Central America, and Northern South America)Near Threatened (NT)2.6 - 4 kg1 offspring at 1 litter/year, 2 in rare cases.
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LisaStephens0lis1Greater bamboo lemurProlemur simus1 (Madagascar)CR (critically endangered)2.51 offspring/year
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LorindaBruinsma0lb1Giant golden-crowned flying foxAcerodon jubatus1: Islands of the PhilippinesEndangered with possibility of Extinction0.7-1.2 kg1 pup/year
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Luba Goyaniuk9lbg1Siberian musk deerMoschus moschiferus3Vulnerable (VU)7-17 kg 2
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LucasMarcelli11lm20Swamp deerRucervus duvaucelii1 - Northeast indiaV130-140 kg1
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Mackenzie JordannMerritt8mjm13African Wild DogLycaon PictusOnly found in Africa (particularly East and South Africa) in approximately 14 countries. E (Engandered) 18-36 kg (29.5- 43 inA female African Wild Dog typically has a litter of 2-20 pups that are cared for by the whole pack. She may reprodue at any time of year. The usual time between births is 12-14 months, unless her previous young died, meaning that a single female African Wild Dog generally reproduces once a year. She typically has a gestation period of 70 days.
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MargoBacher8mb65Common ratRattus norvegicusEverywhere except the arctic, antarctic and IcelandLC500g~35/year
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MarkGaudry11mg54Southern African hedgehogAtelerix frontalis5 (Angola, Namibia, Zimbabwe, Botswana, and South AfricaLC240-480 gramsGestation period of one month, after which a littler of 1 to a maximum of 9 are born.
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Meganvan Veen9vmjvAmerican PikaOchotona princeps2LC 0.170 kg (170 g)2 litters/year at 3 young/litter
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MeghanArteaga8maa3Spectral batVampyrum spectrum7 (Mexico, Peru, Ecuador, Brazil, Suriname, Guyana, Trinidad) Near Threatened (NT)0.15-0.19kg1-3 (average 1)
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Melissa Penner11mvl1Bighorn sheepOvis canadensis2 (Canada + US)E (according to Defenders of Wildlife in US; not listed on SARA)males 58-143 kg; females 34-85 kg1 litter/year with 1-2 lambs per litter
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Melissa Keith9mk46Black-andwhite ruffed lemurVarecia variegata1, endemic to MadagascarCR3.1-4.5 kg2.2 offspring (average)/year
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michaelkim12myckAfrican ElephantLoxodonta africanaCongo Basin, Coastal East AfricaVulnerableup to 6 tons1 elephant every 22 months
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Michelle Truax8mt42Wildebeest (species:black)Connochaetes gnou 1: South AfricaLC Least Concern110 - 180 kg1 or 2 calves per year
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MiriamBart0mhebBrown bearUrsus Arctos10 [North America (Canada and Alaska) and Northern Eurasia]LCAt birth: 450g; Cubs: 7-9 kg; Adults: 100-635 kg1-4 cubs/year, average of 2
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MollyQuan11mmqLionPanthera leo29 (Sub-Saharan Africa and India)VU (Vulnerable)150-227 kg1-4 cubs per litter/1-3 litters per year (often depends on how many cubs survived in the previous litter)
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Na SungKim9nsk1Sunda pangolinManis javanicaSoutheast Asia (8 approx.)E (Endangered)10kg1 to 2
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NoahRosen11nwr1WolverineGulo gulo6 different countriesVulnerable (V)11-18 kg males
7-14 kg females
1 to 5 offspring per year
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OpaleFugulin11otfRed PandaAilurus fulgens6 (China, Bhutan, Nepal, India, Burma and Laos)V (vulnerable)Males: 3.7 to 6.2kg Females: 3 to 6kg1 to 4 cubs
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PaigeBaumgartner11pab17HippopotamusHippopotamus amphibius29VU (Vulnerable)22501
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PaulSuddaby2pas1JaguarPanthera onca19 (Central and South America)NT (Near Threatened)56–96 kgup to four cubs, but most commonly two.
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Paul Throop8pttCapybaraHydrochoerus hydrochaerisFound throughout almost all countries in south america except chile Least Concern (LC)35-66 kg5-6 months / 1-6 young (average is 4)
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Prosad KumarGuha9pkg1African buffaloSyncerus cafferAfrica (south and east mostly)LC 500-910 kgOnly during rainy season, 1-2 offspring
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RichardWalker9rw12ImpalaAepyceros melampus13 (East and Southern Africa)Least concern (LC)45-60 kg1 offspring/year
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RogerBuckley0rlb1Fish-eating batMyotis vivesi2 (Gulf of California, Mexico)VU (Vulnerable)0.025kg1 offspring per year
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RozDakin2rdGiant pandaAiluropoda melanoleuca1endangered1300.5
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RyanBenvenuti12rb20American MartenMartes americana2 (Canada and US)Least Concern0.5 - 1.4 kg1-5 kits per year
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RyanAbrams9rpa2Cape mole ratGeorychus capensis1 (South Africa) Least Concern (LC)0.18kg3 - 10 offspring/year
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RyanGroome9rrg2Pygmy hogPorcula salvania1 (India)CR10kg3 to 4
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RyanEvin11re1Wood BisonBison bison athabascaeNear Threatened (NT)350-1000 kg1-2 Offspring Every 3 Years
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ShannonBrandt12scb1Duckbill PlatypusOrnithorhynchus anatinus2. (Australia and Tasmania).Least Concern (LC)~1.5 kg~2/female/year.
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SpencerBarr1sb46Cottontop tamarinSaguinus oedipusNorth West ColumbiaCR432 g1 offspring per year
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