Been there, I once had a 90lb lab/GSD mix who played fetch with an 8 foot 2x4. He once ate a can of cat food while it was still in the can. (punched holes in it and squeezed the can flat).

But JRT's fear nothing and would charge a rhino if it came near. This guy is on a 3ft leash of 300lb test paracord literally tied to my wrist. When he stops so do I. Are the dogs going to Toronto with you? Might help you stay warm at night!