Ponypopster
Member
I've been jumping my 13.2 pony since march and he really loves it. he is and very lightweight cob and will be 5 in February. What's the biggest you'd jump a pony like this as I don't want to damage his joints 
I would concentrate on jumping varied things (different types of show jumps, xc jumps etc) at tiny heights for the time being rather than concentrating on size, and as his confidence grows you can ask a bit moreOur horse has matured and grown a lot in the last year, and he is rising six, so yours probably will change a little still.