the Pig

(from Wikipedia): Pigs are one of the most intelligent mammals, and some, such as the Asian pot-bellied pig, are kept as pets. Pigs are reportedly more intelligent and more trainable than dogs and cats.
Whoa! Not only adorable and yummy, they are smart too!

And do you know that they have many names? (again from Wikipedia)
Boar - An adult male pig
Sow - An adult female pig
Piglet/farrow - A juvenile pig
Shoat - A young pig between 100 to 180 lb (50 to 90 kg)
Gilt - An immature female pig
Barrow - A castrated male pig
Hog - a domestic or wild adult swine, especially one raised for slaughter because they fatten quickly; in its original sense it means a castrated boar.

(adorable piglets picture was taken from pig farm in bali 2003)