A dog still recognizes its owner two years after being lost. Dogs have long memories of very important things. This is a dog’s emotional memory. If the dog has been with the owner for a long time, the dog will have a deep memory of the owner. Even if the dog is lost for a long time, they can remember their owner through the familiar smell of the owner and the owner's voice.

Dogs’ memory methods

1. Impression memory refers to the dog’s memory of things that it usually comes into contact with. These memories come from vision, hearing, smell, The sense of touch, and even taste, can last about two weeks. Dogs store the memories of things they usually come into contact with in their brains so that they can more fully recall the process when needed.

2. Motor memory, also known as neural memory, refers to the fact that dogs store the actions and movement processes they have done in their minds during daily training or play. This memory is somewhat similar to muscle memory, so it is often more durable than impression memory and can last for more than 2 weeks.

3. Emotional memory refers to memory with generated emotions as the content, and dogs happen to have this unique memory method. Compared with other animals, dogs have rich emotions and deeper emotional memories. This memory can last for months or even years, which is why dogs are more "vindictive".