How do a young Cattle Dog and an old St Bernard play?

How do a young Cattle Dog and an old St Bernard play? ...Each at its own pace!!
Sasha is a 3-yr-old rescued cattle dog for whom we are a foster family until she's adopted into a permanent home. Jack is 8.5 years old with bad hips.
(Our fence is too short for Sasha, so we have to use a runline when she's outside. That's the rope you see in this video. Jack's learned to avoid it pretty well, but when he gets caught, he sits down... sometimes right on Sasha's head.)
To see other dogs available for adoption right now, please check out www.petfinder.c....

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I love this, have a 3 year old blue and a year back had an 11 yr old 80 pound mutt. He'd stand there and she'd just run circles around him and occasionally run into or jump over him. To funny.