I remember these elements - chibi graphics - foreign - baby/caveman - baby could transform into dinos and other animals - platformer
This game can be Super Bonk, i hope thats help you Chuck Rock 2(with the baby) and Wonderboy isn't for SNES
Probably Super Bonk but I don't remember him turning into dinos and animals. Its not Chuck Rock as that didn't feature a baby and Son of Chuck Rock never came out on the SNES. Not Wonderboy either as that was SEGA.