The breeder told us to see if their overweight, run your hand over her ribs. Then rub your hand over your knuckles (not put into a fist) If they feel kinda like that, she is a good size. I could be mixing up what she said with other stuff I heard though

Mick was the biggest of his litter. He is also a bit bigger, but in the solid kinda way Amy was describing. I also think he's a bit more over than the Sheltie standard. He's getting neuteured soon so maybe we'll get the vet to way him and find out.