Are dog tails more sensitive than the rest of their bodies?
But evolutionary reasons may be hard-wired into animals, making them uncomfortable having vulnerable body parts handled. Some dogs do not like having their feet touched. It might be that dogs may feel threatened by having their tail touched.
If you handle your dog's tail while petting her, you can increase her comfort level. When grooming the tail, carefully comb knots to minimize any pulling on the dog's skin. Patience and gentleness is advised when brushing your dog's sensitive areas. After all, we ask our dogs to put themselves in vulnerable positions when we groom them.