The surgery and treatment sections of the game are the best looking sections of the game. Unfortunately, this isn't saying much. You're given fairly static pictures of the various animals you're working on. They breathe and make other random movements, but there is usually only motion in one section of the body. They may have some secondary movement, but they don't really react to your actions. The care sections of the game take a nose dive from there. It's hard to tell what most of the blocky items in the habitats are. Clipping, floating animals, horrible excuses for textures, blocky terrain: you name the graphics problem, you'll be able to find it here. To top it off, scrolling the camera through the terrain is achingly slow.
Fonts are hard to read in the information sections. This being an educational type of game, it shouldn't punish your eyes in the reading sections like this. People in the game look stiff and unnatural. Some animals are a bit more cartoonish looking than others, but some do look rather natural.
Staff are all voiced by actors and are very friendly and upbeat. "That's alright, I know you didn't mean to" is one thing the staff will say to you when you make a mistake. They just hope you try a little harder when you're about to kill the zoo's prized endangered Panda Bear. I know this is supposed to be a light game for kids, but the casual attitude here is scarier than anything else. Other than that, there is some light music with a generic jungle theme, and a few growls and noises that come from the animals. None of it strives for realism.