I have a dog that has literally destroyed a couch, a door (yes, an actual hanging door!), TWO recliners and numerous small things. He's one of "those" dogs! But, he's so doggone cute, and I knew what I was getting into, so I couldn't be mad. He's a boxer and all this was done before he was one. Boxers are bad to chew when they are young, and this guy didn't get training like he should.

He got into a bag of batting I had that fit the quilt top perfectly, and ate a hole in it, literally ate, I never found the piece! I did what others are saying, cut a square, used basting spray and once quilted it was fine.

I still have to be careful with him. He's twice had to have things removed that he's swallowed! He will eat literally anything. Just today , I took a pop can from him, happily chewing away in the driveway.

I also do agree with this method!

You can make the patch blend in well if you leave the hole edges thinned out - wispy like. Then cut your patch bigger than the hole and pull the edges so they fray wispy like too. Lay the thinned edges overtop of each other. Then you won't have a visible or feel a bulge where the patch is.

The new fusible tape to fix that problem works well. You'll need two people: one to hold a backing support while another irons the fusible in place. Should do the trick.
SandyQuilter