Dogs sometimes fake being sick to get attention.
26
Billy goats urinate on their own heads to smell more attractive to females.
31
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
Mosquitoes don't just bite you, they also pee on you.
11
Cats are one of the only animals to domesticate themselves and approach humans on their own terms.
20
An alligator can go through 2,000 to 3,000 teeth in a lifetime.
268
Roosters can't crow if they can't fully extend their necks.
28