1. There are bacteria on Teddy, which can cause allergies or discomfort to the owner.

2. It will reduce Teddy’s independence and make him more dependent on his owner.

3. In the long run, it will cause Teddy to think that his status has improved and not listen to his master.

4. The body structure of dogs is different from that of humans. A large number of bacteria are easily hidden in their hair. When dogs and their owners sleep in the same bedroom, the owners are easily infected with bacteria.