if you breed horses the baby horse will look like an adult horse but really isnt ive tried riding one and it wont let me on the adult horse and when you put a lead on it and try to carry it up a block it wont until its fully grown but it looks fully grown and then later when it grows a little bit and you try to get on it then it will just put you back on then ground facing backwards in F5 mode however if you feed it sugar it will grow faster and when its fully grown everythings fixed the only problem is that baby horses are the same size as adults...