A cat rubs against people not only to be affectionate but also to mark out its territory with scent glands around its face. The tail area and paws also carry the cat's scent.
293
Penguins have a gland above their eye that turns saltwater into freshwater.
12
Domestic pigs average a top speed of about 11 miles per hour.
182
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
Dolphins can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
19
A 42-foot sperm whale has about 7 tons of oil in it.
209