Dogs still recognize their previous owners after changing their owners. Dogs have a good memory and can identify their owners through their sense of smell and hearing, and can firmly remember their owner's smell and voice. Moreover, dogs are very loyal. Even if their owners change, they will still remember the original owner, but this does not prevent the dog from obeying the new owner.

Signs of a dog recognizing its owner

1. When a dog sees its owner, it will be very enthusiastic about the owner and will take the initiative to approach the owner. This means that the dog recognizes the owner.
2. When the owner returns home, he will constantly wag his tail in front of the owner and pounce on the owner. This is a sign that the dog is actively interacting with the owner.
3. Dogs will be very dependent on their owners and want to follow their owners wherever they are. They will feel safe when they stay with their owners.
4. Dogs will become protective of their owners after recognizing their owners. When they see other dogs or people threatening their owners, they will yell or fight with them.
5. Dogs are possessive of their owners and will be unhappy when they see their owners being nice to other animals.