I can tell you just by the looks that Ella gets on her face when she is about to do something, she is going to be the one that we have to keep an eye on. I bought Ella a little one ring pool so that she could have some enjoyment while Chloe plays in the sprinkler that Ronee got for her. I thought that maybe she might be a little bit timid of it but she went right in and kept going back.