A banana slug can be 6-8 inches and their erect penis can be just as long. Also, their penises emerge from their heads. After sex, banana slugs eat each others penises.
17
There's a competition in Sweden called Kaninhoppning, or rabbit show jumping.
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There's a phone app called RoboRoach that allows you to remotely control a cockroach through a chip that you to manually implant into the unwitting critter.
10
A scorpion can hold its breath for up to 6 days.
19
Dolphins have names for one another.
18