My daughter and her husband gave me several chili pepper plants last Sunday. I set them inside my raised garden in the pots so I could plant them on Monday. Sunday night the new puppy came in carrying part of the peat pot. He had reached through the pickets on the fence and destroyed every one of them. Time to start over.
Consider using a deterrent used for rodents and deer .
A spray of hot pepper juice with water,along with a couple of drops of Dawn detergent (surfactent),
sprayed on the plants should disuade him (spicey 'hot' mouth) from messing with your plants. Think Pavlovian response .
The only limitation is that it needs to be reapplied after a rain .
So sorry for you. All our gardens are open to the wandering neighborhood strays and pets that the owners let out to run into our yards to do their business. Sometimes, they destroy my plants too.