Bodhi is pretty solid. She has thighs like rock!! You can see lovely when she's been swimming in the sun (but not sure what sun is anymore...). I have a friend, who lives away, think he has only see Bo once and was playing with her and actually said to me "oooh feel the muscle on her - you DO walk her" I said - yes, only a few miles at a time, you know... and take her swimming, and on sand...... We went 10 miles the other day I'd hate to have a fat dog to be honest - I prefer Bo a bit trim, to a bit over weight. But as a rule, she's usually spot on.