He could understand flank attack.
Often he and Michael had played at that, although it had only been playing.

But to retreat without fighting from a fight once started was alien to Jerry's ways and nature.

With righteous wrath he charged into the hole after his enemy.

But this was where the wild-dog fought to best advantage--in a corner.

When Jerry sprang up in the confined space he bumped his head on the box above, and the next moment felt the snarling impact of the other's teeth against his own teeth and jaw.
There was no getting at the wild-dog, no chance to rush against him whole heartedly, with generous full weight in the attack.