Dogs sometimes fake being sick to get attention.
26
One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
A cat rubs against people not only to be affectionate but also to mark out its territory with scent glands around its face. The tail area and paws also carry the cat's scent.
293
Female kangaroos have three vaginas.
2
There's a young hippo and a 130+ year old tortoise in a Kenyan wildlife preserve who are best friends and they even sleep and play together.
40
When the "Elephant Whisperer" Lawrence Anthony died, a whole herd of elephants arrived at his house to mourn him.
25
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23