Last night, my husband let Klaus our German Shepherd out in the backyard. Klaus immediatly ran to the coops barking and chase something large off, it jumped the 6ft fence, and my husband said the fence shook hard for a minute after that! What kind of critter could jump a fence like that, and make it shake in such a way? Our main land based predators here are raccoons, foxes, and coyotes. My mother doesn't think any of those would jump a fence. What do ya'll think it could be?