Is It Legal To Own A Bat As A Pet. The gray bat, indiana bat and florida mastiff bat are endangered species and are illegal to possess. First, the penguin could not be one that is caught in the wild.

The extensive detail on this can be found here. It is illegal to keep a bat unless you have the required permits, and these permits. Fathead minnow (requires a permit when sold as bait for fishing) any native or established fish in massachusetts;
Even if they are legal i would not suggest anyone getting one as a pet.
Walking catfish & related species; These animals include bears, primates, big cats, canids, venomous and large reptiles (crocodilians, large constrictor snakes, and large monitor lizards). Even if they are legal i would not suggest anyone getting one as a pet. The worst part about caging these animals is that they are born free and though they may need your help to survive, they should be given the freedom to roam freely, hunt for food and seek social interaction with others of their species.