Wolf is on the coffee table when you enter the first locked tunnel, the bird is in the locked rooms past the wolfman after you power generators on, the snake is in the first area you explored with the two bug spawns (just before you pick up the blaster).
In the back corner where its super dark there is a generator (past the wolfman) the activation switch is kind of hidden in the dark, hug all the walls to find it. You will need a keycard found in the area to activate it. But if you've walked around you should easily find them. No particular key card goes to a particular activation switch. I hope this helped.