Checking to see if any of these cars could effectively haul a cat/trailer. This will be a disassembled cat, so the width of the trailer will be around 7 feet, not the 8'6" like the "normal" cat trailers.
I guestimate the trailer, cat, and equipment will be around 900-1000 lbs. max.
Here's the choices:
Chevy Aveo - 103hp - 107 ft. lbs. torque
Kia Rio - 110hp - 107 ft. lbs. torque
Toyota Yaris - 106hp - 103 ft. lbs. torque
Honda Fit - 109hp - 105 ft. lbs. torque
I own an Honda Fit. DO NOT ATTEMPT to tow anything with it, not even an a-cat, not even an opti.