Puppies will not recognize their owners at 45 days old. Generally speaking, puppies will start to accept their owners after about a week of feeding. However, it generally takes about three months from accepting the owner to recognizing the owner. After three months, the puppy will completely remember the owner's appearance and smell. It is recommended that puppy owners pet their puppies more, feed them with their own hands, and spend more time with their puppies to develop feelings and help them quickly accept their owners.

Performance of puppies recognizing their owners:

1. Puppy owners usually give their puppies a name. When the puppies can quickly respond to their own names, When the time comes, you can tell that the puppy has begun to recognize its owner.

2. If the puppy recognizes its owner, it will ask for help or comfort from the owner. When puppies feel scared, they will seek out their owners as soon as possible.

3. Puppies can respond to the owner’s emotions to a certain extent. Puppies are relatively intelligent mammals. If the owner feels sad, the puppy will also feel similar emotions and be able to respond to the owner in a certain way.