Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
The Basenji dog is the only dog that is not able to bark.
4
Cats recognise the voice of their owner, but never evolved to care.
22
Condoms were originally made of animal intestines or linen.
347
Cats lose almost as much fluid in the saliva while grooming themselves as they do through urination!
205
By putting a frog in a bucket of milk, scientists following up on an ancient Russian way of keeping milk from going sour have identified a wealth of new antibiotic substances.
9
Dolphins have names for one another.
18