Are there motorized carts or wheelchairs for disabled or people that can't walk too far?

The zoo rents motorized scooters for $50, $55 for one with a shade. Not all areas can be accessed by mobility devices because of the steep grade.

Yes as Ed provided. Also just to point it out, thr Zoo also has busses that you can take for transportation through the park or tour.

You may also bring your own wheelchair, motorized wheelchair, or stroller too. As above, not all areas of the park or all attractions are accessible via these methods of transportation.

Already answered