Alrighty, here are your snakes, seals, squirrels, snails, zebras, uh, I mean 'striped horses', scorpions, pythons (snake!), penguins (they end in 's'), camels (these, too). Lots of extra animals means lots of extra fun.
A brief overview of the latest animals, right here:
Camels
Find them in the desert at daytime. Tameable by riding (like a horse). You can saddle (2-seater!) and steer them, leash them, and add chests (same as a llama).
Penguins
What they lack in usefulness they make up for with cuteness. Find them in frozen ocean biomes. Tame them with tropical fish, breed them with cod or salmon.
Scorpions
Find them in the desert at dusk and dawn; not tameable and will try to avoid you. If you hassle them too much they will attack!
Pythons
Quite similar to the snake (scroll down) but they won't poison you (their bite does hurt though). Will leave you alone if you leave them alone. Found in jungles at daytime.
"S" Animals
(some of which start with "S")
Seals
These cute little guys spawn in frozen biomes (ocean, sometimes rivers). They'll spend their time on land (ice) and water but prefer the water. Breedable with seagrass and kelp, but will avoid players.
Snails
Completely awesome. Found in swamps, the big ones are tameable and breedable with 'shrooms. You can heal them with seagrass, 'shrooms, wheat, vines, seeds, that sort of thing.
Snake
Yes, Alex is correct to stay back. Leave them alone and they'll leave you alone, I think that's fair warning. You can find them in most forests (not the snowy ones). They will avoid players but if you get too close they'll come for you.
Zebra Striped Horse
Find these in savanna biomes. They are rideable, without a saddle, without taming. Don't ask me why.
Squirrels
Cute little furry things. What can ya say! They can be found in forests (not cold or extreme hills forests). Tameable with cookies or melons, also breedable with the same. They avoid players so you'll have to be clever about taming them.
