This is the (not actually full) mammal list for the year. There are 245 species in this list (well up from last year's 121 species, when no-one really went anywhere), but I haven't included any of Giant Eland's mammals in the list because I'm not going to look up the binomens of 290 species (and at least three of them are down as "sp."). The total would probably be around 500 species but I don't know which of his had also been seen by other people in the thread. And that's why I ask people to include scientific names in their posts.
His mammal list is in this post:
ZooChat Big Year 2021
Platypus
Ornithorhynchus anatinus
Short-beaked Echidna
Tachyglossus aculeatus
Virginia Opossum
Didelphis virginiana
Rusty Antechinus
Antechinus adustus
Ningbing False Antechinus
Pseudantechinus ningbing
Northern Long-nosed Bandicoot
Perameles pallescens
Western Brown Bandicoot
Isoodon fusciventer
Northern Brown Bandicoot
Isoodon macrourus
Koala
Phascolarctos cinereus
Common Wombat
Vombatus ursinus
Red Kangaroo
Macropus rufus
Eastern Grey Kangaroo
Macropus giganteus
Common Wallaroo
Macropus robustus
Agile Wallaby
Macropus agilis
Red-necked Wallaby
Macropus rufogriseus
Swamp Wallaby
Wallabia bicolor
Northern Nail-tail Wallaby
Onychogalea unguifera
Mareeba Rock Wallaby
Petrogale mareeba
Short-eared Rock Wallaby
Petrogale brachyotis
Monjon
Petrogale burbidgei
Red-legged Pademelon
Thylogale stigmatica
Rufous Bettong
Aepyprymnus rufescens
Musky Rat Kangaroo
Hypsiprymnodon moschatus
Common Brushtail Possum
Trichosurus vulpecula
Coppery Brushtail Possum
Trichosurus johnstonii
Northern Brushtail Possum
Trichosurus arnhemensis
Mountain Brushtail Possum
Trichosurus cunninghami
Short-eared Brushtail Possum
Trichosurus caninus
Lemuroid Ringtail Possum
Hemibelideus lemuroides
Common Ringtail Possum
Psuedocheirus peregrinus
Green Ringtail Possum
Pseudochirops archeri
Daintree Ringtail Possum
Pseudochirulus cinereus
Herbert River Ringtail Possum
Pseudochirulus herbertensis
Rock-haunting Ringtail Possum
Petropseudes dahli
Sugar Glider
Petaurus breviceps
Krefft's Glider
Petaurus notatus
Savannah Glider
Petaurus ariel
Yellow-bellied Glider
Petaurus australis
Broad-toed Feathertail Glider
Acrobates frontalis
Eastern Pigmy Possum
Cercartetus nanus
Nine-banded Armadillo
Dasypus novemcinctus
Western European Hedgehog
Erinaceus europaeus
Northern White-breasted Hedgehog
Erinaceus roumanicus
North African Hedgehog
Atelerix algirus
European Water Shrew
Neomys fodiens
Northern Short-tailed Shrew
Blarina brevicauda
Asian House Shrew
Suncus murinus
Madras Tree Shrew
Anathana ellioti
Tufted Grey Langur
Semnopithecus priam
Bonnet Macaque
Macaca radiata
Grey-headed Flying Fox
Pteropus poliocephalus
Little Red Flying Fox
Pteropus scapulatus
Spectacled Flying Fox
Pteropus conspicillatus
Black Flying Fox
Pteropus alecto
Indian Flying Fox
Pteropus giganteus
Island Flying Fox
Pteropus hypomelanus
Eastern Tube-nosed Bat
Nyctimene robinsoni
Greater Horseshoe Bat
Rhinolophus ferrumequinum
Lesser Horseshoe Bat
Rhinolophus hipposideros
Eastern Long-eared Bat
Nyctophilus bifax
Northern Broad-nosed Bat
Scotorepens sanborni
Evening Bat
Nycticeius humeralis
Serotine
Eptesicus serotinus
Big Brown Bat
Eptesicus fuscus
Alcathoe Bat
Myotis alcathoe
Bechstein’s Bat
Myotis bechsteinii
Brandt’s Bat
Myotis brandtii
Daubenton's Bat
Myotis daubentonii
Geoffroy’s Bat
Myotis emarginatus
Lesser Mouse-eared Bat
Myotis blythii [
Myotis oxygnathus]
Greater Mouse-eared Bat
Myotis myotis
Little Brown Bat
Myotis lucifugus
Common Noctule
Nyctalus noctula
Common Pipistrelle
Pipistrellus pipistrellus
Soprano Pipistrelle
Pipistrellus pygmaeus
Mexican Free-tailed Bat
Tadarida brasiliensis
Yellow-bellied Sheath-tailed Bat
Saccolaimus flaviventris
Schreiber’s Bat
Miniopterus schreibersii
Northern (Large) Bent-wing Bat
Miniopterus orianae
Brown Hare
Lepus europaeus
Mountain Hare
Lepus timidus
Snowshoe Hare
Lepus americanus
Black-tailed Jackrabbit
Lepus californicus
European Rabbit
Oryctolagus cuniculus
Eastern Cottontail
Sylvilagus floridanus
Desert Cottontail
Sylvilagus audubonii
Swamp Rabbit
Sylvilagus aquaticus
Indian Giant Squirrel
Ratufa indica
Eurasian Red Squirrel
Sciurus vulgaris
Eastern Fox Squirrel
Sciurus niger
Eastern Grey Squirrel
Sciurus carolinensis
Western Grey Squirrel
Sciurus griseus
Arizona Grey Squirrel
Sciurus arizonensis
American Red Squirrel
Tamiasciurus hudsonicus
Douglas' Squirrel
Tamiasciurus douglasii
Eastern Chipmunk
Tamias striatus
Yellow-Pine Chipmunk
Neotamias amoenus
Cliff Chipmunk
Neotamias dorsalis
California Chipmunk
Neotamias obscurus
Townsend's Chipmunk
Neotamias townsendii
Three-striped Palm Squirrel
Funambulus palmarum
Striped Ground Squirrel
Xerus erythropus
European Souslik
Spermophilus citellus
Arctic Ground Squirrel
Urocitellus parryii
Thirteen-lined Ground Squirrel
Ictidomys tridecemlineatus
Barbary Ground Squirrel
Atlantoxerus getulus
Golden-mantled Ground Squirrel
Callospermophilus lateralis
Franklin's Ground Squirrel
Poliocitellus franklinii
California Ground Squirrel
Otospermophilus beecheyi
Rock Squirrel
Otospermophilus variegatus
Round-tailed Ground Squirrel
Xerospermophilus tereticaudus
Harris's Antelope Squirrel
Ammospermophilus harrisii
Black-tailed Prairie Dog
Cynomys ludovicianus
Gunnison's Prairie Dog
Cynomys gunnisoni
Woodchuck / Groundhog
Marmota monax
Alpine Marmot
Marmota marmota
Black Rat
Rattus rattus
Brown Rat
Rattus norvegicus
Bush Rat
Rattus fuscipes
House Mouse
Mus musculus / domesticus
Algerian Mouse
Mus spretus
Steppe Mouse
Mus spicilegus
Striped Field Mouse
Apodemus agrarius
Wood Mouse
Apodemus sylvaticus
Yellow-necked Wood Mouse
Apodemus flavicollis
Eurasian Harvest Mouse
Micromys minutus
Barbary Striped Grass Mouse
Lemniscomys barbarus
Water Vole
Arvicola amphibius
Bank Vole
Myodes glareolus
Northern Red-backed Vole
Myodes rutilus
Southern Red-backed Vole
Myodes gapperi
Field Vole
Microtus agrestis
Meadow Vole
Microtus pennsylvanicus
California Vole
Microtus californicus
Singing Vole
Microtus miurus
Canadian Lemming
Lemmus trimucronatus
Northern Collared Lemming
Dicrostonyx groenlandicus
Moroccan Jird
Meriones grandis
Hazel Dormouse
Muscardinus avellanarius
Edible Dormouse
Glis glis
European Hamster
Cricetus cricetus
Romanian Hamster
Mesocricetus newtoni
White-throated Woodrat (Arizona Packrat)
Neotoma albigula
Hispid Cotton Rat
Sigmodon hispidus
Marsh Rice Rat
Oryzomys palustris
North American Deer Mouse
Peromyscus maniculatus
White-footed Mouse
Peromyscus leucopus
Western Harvest Mouse
Reithrodontomys megalotis
Muskrat
Ondatra zibethicus
Coypu / Nutria
Myocastor coypus
Fawn-footed Melomys
Melomys cervinipes
Australian Tree Mouse
Pogonomys mollipilosus
Giant White-tailed Rat
Uromys caudimaculatus
Common Rock Rat
Zyzomys argurus
Kimberley Rock Rat
Zyzomys woodwardi
Botta's Pocket Gopher
Thomomys bottae
Attwater’s Pocket Gopher
Geomys attwateri
Southern Viscacha
Lagidium viscacia
European Beaver
Castor fiber
American Beaver
Castor canadensis
North American Porcupine
Erethizon dorsatum
Dugong
Dugong dugon
Feral Horse
Equus caballus / ferus
(European) Wild Pig
Sus scrofa
Indian Wild Pig
Sus (scrofa) cristatus
Collared Peccary
Pecari tajacu
American Bison
Bison bison
Gaur
Bos gaurus
Nilgai
Boselaphus tragocamelus
Dorcas Gazelle
Gazella dorcas
Pronghorn
Antilocapra americana
Alpine Chamois
Rupicapra rupricapra
Rocky Mountain Goat
Oreamnos americanus
Muskox
Ovibos moschatus
Mouflon
Ovis gmelini
Dall Sheep
Ovis dalli
Feral Goat
Capra hircus / aegagrus
Spanish Ibex
Capra pyrenaica
Red Deer
Cervus elaphus
American Elk (Wapiti)
Cervus canadensis
Sambar
Rusa unicolor
Chital
Axis axis
European Fallow Deer
Dama dama
European Roe Deer
Capreolus capreolus
White-tailed Deer
Odocoileus virginianus
Mule Deer
Odocoileus hemionus
Caribou
Rangifer tarandus
European Elk
Alces alces
American Moose
Alces (alces) americanus
Chinese Water Deer
Hydropotes inermis
Indian Muntjac
Muntiacus muntjak
Reeves' Muntjac
Muntiacus reevesi
Humpback Whale
Megaptera novaeangliae
Grey Whale
Eschrichtius robustus
Fin Whale
Balaenoptera physalus
Minke Whale
Balaenoptera acutirostrata
Long-finned Pilot Whale
Globicephala melas
Harbour Porpoise
Phocoena phocoena
Long-beaked Common Dolphin
Delphinus capensis
Striped Dolphin
Stenella coeruleoalba
Spinner Dolphin
Stenella longirostris
Common Bottlenose Dolphin
Tursiops truncatus
Indo-Pacific Bottlenose Dolphin
Tursiops aduncus
Australian Snubfin Dolphin
Orcaella heinsohni
European Wildcat
Felis silvestris
Feral Cat
Felis catus
Bobcat
Lynx rufus
Dingo
Canis (familiaris / lupus) dingo
Golden Jackal
Canis aureus
Coyote
Canis latrans
Dhole
Cuon alpinus
Red Fox
Vulpes vulpes
Arctic Fox
Vulpes lagopus
Gray Fox
Urocyon cinereoargenteus
Channel Island Fox
Urocyon littoralis
Raccoon Dog
Nyctereutes procyonoides
Brown Bear
Ursus arctos
Polar Bear
Ursus maritimus
American Black Bear
Ursus americanus
Sloth Bear
Melursus ursinus
European Polecat
Mustela putorius
Stoat
Mustela erminea
Least Weasel
Mustela nivalis
American Mink
Neovison vison
Fisher
Pekania pennanti
Beech (Stone) Marten
Martes foina
Common Otter
Lutra lutra
North American River Otter
Lontra canadensis
Sea Otter
Enhydra lutris
European Badger
Meles meles
American Badger
Taxidea taxus
Striped Skunk
Mephitis mephitis
Hooded Skunk
Mephitis macroura
Egyptian Mongoose
Herpestes ichneumon
Indian Grey Mongoose
Herpestes edwardsii
Common Raccoon
Procyon lotor
White-nosed Coati
Nasua narica
Walrus
Odobenus rosmarus
Grey Seal
Halichoerus grypus
Common / Harbour Seal
Phoca vitulina
Australian Fur Seal
Arctocephalus pusillus
New Zealand Fur Seal
Arctocephalus forsteri
South American Sealion
Otaria flavescens
California Sealion
Zalophus californianus
Steller's Sealion
Eumetopias jubatus