The longest-lived animal is the rougheye rockfish (Sebastes aleutianus) which has been aged to 205 years. The age was determined by a validated method of counting the rings on the fish's otolith (which is similar to counting the rings of a tree).

Insect longevity? Queen ants live the longest, up to 28 years in captivity.

An ostrich has the biggest eyes among land animals--2-inch (5 cm) in diameter. A horse has the next biggest, even bigger than elephants' eyes. All land animal eyes, though, fall woefully short of the biggest eye of all--the 10-inch (25 cm) dinner-plate size giant squid eye. A human's eye is about an inch across.

It's hard to say which are the top ten smartest animals but here's our list: apes and monkeys, dolphins and some whales, dogs, cats, crows, ravens, parrots, pigs, squirrels, octopuses.