I have a foot injury, can I rent a scooter at the zoo so I can mostly stay off the injured foot?

You should call to see what they have available

I've seen a wheelchair or two there before, but I'm unsure if they were FOR the zoo. Definitely call them before, just to be safe, if they do have them make sure they don't run out before you arrive.

I know they have strollers for kids but i don't think they would have scooters. They may have wheelchairs. That sounds like something you would want to call about.