Don’t you ever think that when a cat sits down and tucks all its limbs under it, it is just like a loaf? Depending on the size of the cat, the loaf would look more like bread/cake when the weight spreads out.
Here’s a loaf of Freya, my cat. You can’t even see where her legs are… I’ll try and get a picture of Odin (her brother) in the loaf position… he is much bigger and looks even more loaf-like. >(^.^)<