Velociraptor: Its name means "fast thief" and it is often called a "raptor" for short. They come in three varieties, green, brown, and grey. All are exactly the same except the greens take very few shots to kill, the browns a bit more, and the greys significantly more. Killing raptors does not reduce your dinosaur count, so you can use either lethal weapons or non-lethal weapons.
Dilophosaurus: These are green dinosaurs that shoot little venom balls at you. Their aim is pretty good and they take a couple of shots to get rid of.
Procompsognathus: "Compies" for short. Small orange dinosaurs with turquoise spots that run back and forth along the ground. They're very weak, but they'll knock you down if you make contact. Usually you should just jump over them instead of bothering with shooting them. If you approach slowly, though, you'll usually be able to catch them sitting still and they're easy to shoot.
Pterodactyl: They're like airborne compies in terms of annoyingness, only much worse. Like the compies, they're extremely weak, but they'll actively pursue you and knock you down. You only encounter them in High Ptera and Seek and Destroy.
Pteronadon: A large pterodactyl. Only found in High Ptera and not a large threat. It makes a loud noise to announce its presence and basically hovers, moving up and down a short distance. Other than that they're no trouble and will go down with a couple of charged cattle prod shots.
Insectoid: I have no idea what this is supposed to be. Presumably it's not actually a dinosaur, but killing it still reduces your dino count. These just fly by making a buzzing noise, and usually appear above pits to cross so that you will run into it if you leap before looking.
Gallimimus: Only found in "Protect the Gallimimus", and the only dinosaurs in that mission. All they do is run to the left.
Unknown: The only dinosaur found in Get Power Supplies to Incubators. They're about the same size as gallimimus and act like large compies. You can usually just jump over them.
Triceratops: Large and bull-headed. Found in Seek and Destroy, where you should probably avoid it. It's also found again near the end of the game.
Tyrannosaurus Rex: The boss of two levels. In the first level, it will pursue you while you stand upon a truck firing at it to keep it at bay. The second time you must actually kill the T-Rex.
Weak gunman: A light-skinned man in a bluish-gray outfit. He dies in one hit of the rifle on the easy difficulty setting, two hits on normal, and three hits on hard. They either remain stationary or rush at you. They will run you over if they're running, but only their bullets can hurt you when they're stationary. Respawns when you move a screenful away after you kill him.
Strong gunman: A dark-skinned man in a blush-gray shirt and gray pants. He has a higher fire rate than the weak gunman and takes more shots to kill. As with the weak gunman, they are either stationary or constantly rushing. Respawns when you move a screenful away after you kill him.
Armored gunman: A man clad in blue armor. Rare. He will generally run toward you, but will stop to fire. He fires with a fair rate and takes quite a few shots to kill; a shotgun is good, but the machine gun will work, too.
Grenadier: A man in a yellow protective suit. Stands in place and hurls grenades in your general direction in a slow, steady rhythm. They can adjust their aim a bit, but can't do so very precisely. They take a few hits to kill.
Bazooka: They crouch and fire some kind of missile at you. However, it's high enough that you can duck the projectile and kill them very easily.
Flamethrower: A man in a gray protective suit. He can shoot flames horizontally, diagonally 45 degrees, diagonally at a low angle (so he can hit you when you're crouching), but not vertically, so it's safe to be directly above or below them. The flames are extremely dangerous as they drain your health very quickly. If you kill a flamethrower from directly above or below, his backpack will explode, which will cause damage if you're too close.
Scientist: Rare. Extremely weak, fires one bullet and then runs away. A single bullet from the rifle is enough to do him in on Easy.
Guy in business suit: Seen at the very start of the Biosyn HQ mission. If you get too close, he'll activate an alarm, causing weak gunmen to rush into the room, but that's no big deal. He takes a few shots to kill, but he won't activate the alarm if you shoot him, only if you get too close.
Knifeman: Rare. Throws a knife at you, then runs away. Very easy to kill.
Flamethrower boss: Only two in the game, one in the Blockade mission and again in the Destroy Biosyn Headquarters mission. If you beat him, you finish the mission. He's a very large man with a flamethrower and a normal gun. Unlike normal flamethrower enemies, he can aim straight upwards, so if you stand directly above him, don't do it very long! You need a bunch of shotgun shells to bring this guy down.
