Common dormouse anaesthetised in a researcher's hand
Common dormouse nest in a researcher's hand
Common dormouse being anaesthetised for microchipping
Ecological researcher studying specimens
Lizard being examined by an ecological researcher
Insect research
Brian Fisher, US entomologist
Ecological researcher examining specimens
Ecological researcher measuring a specimen
Crowned lemur female
Crowned lemurs
Gray wolf sleeping on a snow-covered mossy boulder
Ginger tabby curled up in a basket
Ecological research laboratory, France
Viola Shelly Shantz, US zoologist
Cut rhino horn
Konrad Gessner, Swiss naturalist
Joshua Brookes, English anatomist
Theodosius Dobzhansky, Russian-US geneticist
John Hutchinson, zoologist
Puffin sleeping on Skomer Island, Pembrokeshire, UK
Flying fox, X-ray
Baby Indian palm squirrel
Coypu pair
American black bear
Sleeping cat
Adult red fox resting
Koala sleeping in tree
Golden retriever with three puppies lying asleep
Silver spotted British shorthair cat
Sleeping puppy
Close up portrait of a lioness sleeping
Lioness sleeping close by one of her cubs
Lioness sleeping
Eastern chimpanzee infant sleeping
ベンチで寝る猫
ベンチで寝る猫の手
ベンチの下で寝る猫
昼寝をするネコ
寝そべるのらねこ
子猫
猫のお昼寝
野良猫の昼寝
眠る子犬の顔
Giant panda
Hoffman's Two-toed Sloth in Costa Rica.
Baboon sleeping
Polar bear sleeping
Polar bear sleeping in snowbank
Black flying fox roost
Black flying fox sleeping
Lesser horseshoe bat
Sleeping lioness with her cubs at sunset
White rhinoceros horn removal
White rhinoceros conservation
Parasite identification
Grey squirrel being dissected
1905 Edwin Ray Lankester Zoologist
眠る子ねこ
Agnes Mary Claypole Moody, US zoologist
Barbara McClintock, American geneticist
Frank Rattray Lillie, American zoologist
Marie Agnes Hinrichs, US zoologist and physiologist
Mary Jane Rathbun, US zoologist
Mary Stuart MacDougall, US biologist
Russian-US geneticist Dobzhansky with fly maze, 1965
Margaret Alger Hayden, US zoologist
Margaret D. Thompson, US zoologist
Olive Swezy, US zoologist
Beetle research
Charles Valentine Riley, British-US entomologist
Bird roosting at night in the rainforest
Sleep understand
Charles Huskins, Canadian geneticist
Charles Darwin, British naturalist
European bison
Honey bee research
Red squirrel
昼寝中のライオンの雄
昼寝中のライオンの牝
街道
Greater flamingos sleeping
Researcher studying effects of light pollution on toads
Trapped hedgehog
Common toad (Bufo bufo)
Biologist tagging the flipper of a southern elephant seal
Pig-tailed macaque suckling
Koala sleeping
Lions relaxing
Southern elephant seals
Southern elephant seal
Hippopotamuses
Sleeping giant panda
Seabed species research
Homeless man sleeping in street, Dhaka, Bangladesh
Red fox sleeping
眠るラグドール
A small grey and white kitten asleep, feet hanging over the edge of the pet bed.
A litter of grey and white kittens asleep in a small cat bed.
A small grey and white kitten lying asleep on a bed.
A small grey and white kitten lying on a bed.
木の上で眠るコアラ
キャメル毛のまくら
眠るキタキツネの子供
眠る子ネコ
公園で寝るノラネコ
長崎港を見下ろす丘で寝る野良猫
民家脇で丸くなって眠る野良猫
丸くなって眠る猫
丸く寄り添って眠る猫
室外機の上で眠る猫
石畳で眠る猫
寝返って伸びをする猫
岩の上で眠る黒猫
昼寝する仔ウマを見守る母ウマ
タワーの上で眠るネコ
窓辺のネコ
何かを見つめるネコ
棚の上でくつろぐネコ
石畳で寝そべる猫
昼寝をするライオン
昼寝をするトラ
中の茶屋の解説
サイ
猫つぐらの猫
車の下で昼寝をする猫
昼寝をする猫
野良猫
家の塀で昼寝をする猫
車のボンネットで昼寝をする猫
ネコの昼寝
お休み中のコアラ
昼寝中のネコ
Researchers using infrared camera to study wolves and sheep
Deer horn fossil
J. Balthazart, Belgian neuroscientist
Common pauraque, camouflaged while roosting
Cleaning a dog
Checking a cocker spaniel's mouth
Dog in plastic bath with lather all over its body
Brushing a dog's coat
A large dog lying on a hearthrug.
Dog sleeping on bed
北海道 子馬のうたたね
居眠りする子猫
カバ
Sleeping Dog
カリフォルニアアシカ
ヤマガラ