I guess that depends on what you mean. The common name 'mudpuppy' or 'water dog' is usually for Necturus
species of aquatic salamanders, but in the pet and bait trade, it also often refers to the larval form of the tiger salamander (Ambystoma tigrinum
). Tiger salamander larvae are actually quite easy to care for, and pretty cheap - so cheap that they're sold as fishing bait in many places. So if I had to make a recommendation, I'd say go with those.
Of course, they're not legal everywhere, so you might have to double check your local laws.
She sits in her corner, singing herself to sleep.
Wrapped in all of the promises, that no one seems to keep.