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
Lurch, a Watusi bull, had the largest horns in the world.
32
Meysi is one of the world's smallest dogs, measuring in at just 7cm tall, 12cm long, and weighing a meagre 250 grams (only slightly heavier than a hamster!)
11
Cats and dogs can hear ultrasound.
350
Ants have tiny magnetic compasses in their antennae which help them navigate.
9
A domestic cat can sprint at about 31 miles per hour.
274