Rat - The second time you see this creature (first was Chapter 3). They don't do much. Just when they see you they lunge at you. Rat - The second time you see this creature (first was Chapter 3). They don't do much. Just when they see you they lunge at you.
Aggressive Amphibian - [See Aggr. Amphibian in Chapter 2 Enemies]
Flying Squirrel - These guys are much like the Rats from the beginning of this chapter. Except they jump as high as you are, and they run instead of walk.
Condor - This one is much like the Teradon of Chapter 3. Except that it pecks at you about four or five times when in range.
Pig - This is sort of a coward creature. It just wobbles about and when you go to attack it, it runs away. It's only defense is nose bubbles.
Small Cat - This is probably the earliest known non-domestic cat creature. It's a vicious little guy, and it's usually in a pack of three. So it's hard attacking them.
Brontosaurus - Whoa! These guys are back?! Thought they died in the meteor shower. For more info: [See Brontosaurus in Chapter 3 Enemies]
T-rex - Coming back as an enemy. [See T-rex in Chapter 3 Enemies]
Rhino - I believe this is the earliest form of the only known rhino appearing in this game (don't know what the hell else it would be). It's only aggressive when you come near, then it rams you.
Penguins - HAHA! Look at them! Penguins! Cute! Ahhh... couldn't resist. Anyways. This creatures are quite funny. All they do is waddle around and when they see you, they slip and slide, and try to slide into you! Haha! FUN!
Sealion - Well, uh. These guys are pretty boring. They sleep until you attack them. They they basically do the same thing as the Penguin except they jump at you first.
Mammoth Brothers - Dun dun dun! The first boss, or bosses you encounter in the Mammal Chapter. And maybe the easiest (next to the one after it). All the brothers (three to be exact) do is, they fire nose bubbles (why did they make this attack?) at you, homing nose bubbles that is. And after that they charge at you with their tusks. It's pretty simple if you can corner them.
Bird Warrior - The first thing you see when going to the Bird Fortress in the sky! (this game is getting a little whacked) They just fly about and try to stab you with what look to be spears. Should be easily dispatched with the right Jaws.
Bird Triceratops Riders - OMG! The second creature of the Bird Fortress (only Enix could think of this). They like, ride around on these little Triceratops (as seen in Chapter 3), and try to throw little spears at you. OMG!
Griffin Warriors - Although, they look nothing like griffins, but Bird Warrior was taken. They are actually agile warriors with a good slice and jab with their Arabian swords. Better watch out, kids. Stabbie stabbie.
Bird-King - This is the second boss of the Mammal chapter. Probably the easiest too (maybe the mammoth bros. are). All he really does is fly around and fire small rainbow colored spheres at you. They sure do pack a punch, but if you corner this guy, it shouldn't be a problem.
Yeti Father - The third boss of the Mammal chapter. One of the hardest if you don't play your cards correctly. I recommend being either a 4-legged mammal, or a bird from Chapter 3. Upgrade yourself to the max or nearly so. He's still hard. His main and only attack is jumping into the air and punching at you. Make up your own strategy!
Yeti Mother - The fourth and final boss of the Mammal chapter. This one is much like the previous boss (hah, did that so I wouldn't write as much). Just a few differences. Instead of punching, she slap pounds. Deals more damage. And she also blows air that turns to icicles that fire at you. Easily dodged though.