Mine is also 50-60 lbs (probably in the 60+ right now). But mostly because he’s a chubby that eats anything and everything. Ryder is a strictly outside dog. Once he got the taste for the great outdoors he never wanted to come back inside. We’ve tried inviting him in on cold nights, but he has his little area in my husband’s shop that he can stay warm. He is a really good watchdog too and great with the chickens.My girl weighs about 60 lbs. She is all black and was dumped at the door. No one adopted her for 2 yrs. She is so sweet, but sure knows bad people and is a great door bell.