Dogs sometimes fake being sick to get attention.
26
The male praying mantis cannot copulate while its head is attached to its body. The female initiates sex by ripping the males head off.
85
The colossal squid has the largest eyes in the world.
4
Roosters can't crow if they can't fully extend their necks.
28
A scorpion can hold its breath for up to 6 days.
19
If a man could run as fast for his size as an ant can, he could run as fast as a racehorse.
108
Crocodile babies don't have sex chromosomes; the temperature at which the egg develops determines gender.
45