This was fun but I wonder if this might need some additional mechanics to scale up the puzzle difficulty? In these levels, at every step there was always at least one elephant whose placement was enforced locally (because a baby elephant could only be reached from one side, or because an empty cell could only reach one baby elephant). Though letting trunks cross might already be enough. Definitely a cool idea! :)
Thanks for playing! Yeah, the rules need some work for sure to make it interesting, but I think there probably is potential - this is basically the simplest version of the rules possible (the equivalent paper puzzle I realised is “make a domino tiling where each baby elephant belongs to a different domino” which is inherently simple). I didn’t get around to figuring out the details of why you would want to protect adult elephants for example.