Pushing too hard on certain breeds
Toy dogs and small breeds, as well as flat faced (brachycephalic) breeds, need different exercises compared to other dog types. For instance, Boxer, English Bulldogs, and French Bulldogs should not exercise in extreme hot weather as this can threaten their health.
Discuss these exercises with your vet and which ones suit the breed of your puppy. Listen to your dog when it tries to tell you to stop pushing too hard. If you your pup gets lethargic, pants too fast, or drops to the ground during exercise, you should stop and let it rest immediately.