PS - My mare has a noticably larger back leg. She's had three previous injuries on this leg, and yes, has minor arthritic problems in it. It's not going to get any smaller, so no need to point out it is larger.
PPS - MJ's pictures vary from last year until recently. I tried to find some pictures from various times.
First horse is RMS that's My Story (Molly Jo). She's a 13 year old QH mare. She stands right at 15 hands, and is used for barrel racing and pole bending.
Second horse is Red Money Maker (Red). He's a 7 year old QH gelding. He is 16 hands, and is used for barrel racing and trail riding.