Usually because its itching itself. If it cant reach the itchy spot with its toenails, it nibbles on the itch. Hope that helps!
Get the dog some good chew toys. Dogs need to chew.
Yes, A dog could vomet after eating a chew toy
rice
A dog likes to chew on a "bone." Changing one letter, it becomes "zone."
No, but chow is.
A Bone
You will poison
A Bone
It's awful to imagine it but if a dog is in enough pain and distress it might be driven to chew off a toe.
Some alternative chew toys to dog bones involve some of the following: Nylabone Durable Dental Dinosaur Chew Toy, the Kong Extreme Dog Boy, and Pet Stages Soft Toss Ring.
When you say bite do you mean he is taking a bite out of something or tearing something apart, if this is going on he needs something to chew on like one of those toy ropes, is the dog a puppy? If so, he may be teething. Usually a dog will not chew on itself, unless the dog has an infection and will keep licking the area, the only chewing i have seen a dog do is grooming their nails. Another cause of chewing is fleas. It could be that your dog's biting may be a form a scratching. You may want to take the dog to the vet, something may be wrong. Constant licking or if he is chewing himself can even be hunger.
No They Will Die.