When you have a sensible puppy and a naughty puppy at the same time -
A naughty puppy running crazy in the yard accidentally knocked over the little owner because he was too excited...
And the other sensible dog, finding that his companion was a little uncontrollable, immediately began to block it, and successfully intercepted it when the naughty puppy rushed to the owner!
One is a guardian, the other is a catastrophe, a dog from the same family, this gap is too big...