Teach your dog to sit and jump, then, while sitting, tell it to jump to have your dog do a back flip.
Get your dog to lie on its back, then tell your dog to jump to make it perform a somersault in the air.
First, try to find the "Flower Waltz" record and have your dog(s) dance to it. The last move your dog(s) will perform will be a back flip, and you’ll be able to teach your dog(s) back flip by doing this. Note: There are moves in this dance. Also, this doesn’t work in Bark mode.
After your dogs do extremely well at the disc competitions, throw a slow but high disc to make your dog jump, catch it, and do a back flip in the air.
If you find a shower cap, throw it to your dog and when they catch it in their mouth, they will do a back flip.