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TIL that rodents like rats and squirrels can’t vomit, one of the few mammals lacking that trait

by whatilearned May 25, 2022, 6:48 pm

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TIL the control of fire by early humans a million years ago changed our sleeping patterns. Exposure to artificial light during the afternoon altered humans’ circadian rhythms and contributed to a longer waking day, giving us 16 hours in the waking day while most mammals are only awake for half that.

by whatilearned May 20, 2022, 2:44 am

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TIL there’s a scientific term for aquatic mammals losing their fur through evolution

by cringeyjokesman May 16, 2022, 1:53 am

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TIL that the weight, in metric tons of carbon, for all animal livestock on Earth is 100 million tons (cows, pigs, chickens, etc.). This is more than 10X the weight of all wild mammals and birds at only 9 million tons (whales, wildebeest, sparrows, etc).

by whatilearned April 22, 2022, 4:01 am

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TIL 36% of all mammals are human, 60% our livestock and 4% wildlife.

by whatilearned April 16, 2022, 10:24 pm

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TIL: Female binturong are one of the few mammals with the ability to delay implantation after mating. It is called embryonic diapause and means that she can control the timing of her pregnancy to take place when environmental conditions are favourable. Binturong have a litter of 3-6 young.

by whatilearned April 10, 2022, 5:43 pm

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TIL that dinosaur-era mammals were not just small, unremarkable insectivores, but were ecologically diverse and experimenting in gliding, swimming, burrowing, and climbing. Dinosaurs were not the only cool kids at the time!

by whatilearned April 3, 2022, 4:12 pm

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TIL that all carnivorous mammals can be divided into “cat-like” or “dog-like”.

by whatilearned April 2, 2022, 8:52 pm

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TIL that flamingos are unique from all other birds and mammals in that they have hinged upper beaks (jaws) instead of lower. They use their tongues and beaks to move water through filters they use to catch food. But, because their upper beaks move, they have to eat with their heads upside down.

by whatilearned February 9, 2022, 3:21 pm

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TIL Earlier mammals like cats, rabbits, and ferrets experience endocrine changes during mating – usually from clitoral stimulation during intercourse – that induce ovulation. In humans, orgasms lead to similar endocrine changes but are not required for ovulation.

by whatilearned February 6, 2022, 6:20 pm

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TIL Bats are the only mammals whose knees bend backwards.

by whatilearned January 26, 2022, 1:30 pm

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TIL there’s a group of mammals that don’t give live birth and lay eggs instead. They’re called monotremes

by whatilearned January 12, 2022, 10:07 pm

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