Unlocking Animals

My 8 year old neuro-spicy kid loves playing Castle Crashers and it has been something we have really bonded over and connected. His new obsession is unlocking all the animals. We have most, but we did need to cheat a little and look up some secrets.

Some of the cheats show how to unlock an animal on a PS3 or XBOX, but we are playing on a switch. Is their a device compatible with the switch for unlocking the animals? I'm not sure we are going to get much sleep until everything is unlocked, so thank you for all your help!