1. Corgis. Corgis are one of the most popular small dogs. They look cute, are very quiet at ordinary times, and never bark, so they never disturb people and are very easy to raise. Moreover, Corgis are not picky eaters and are easy to feed. Corgi is also very smart, with an IQ ranking 11th among all dogs, and can quickly understand its owner's instructions.

2. Pug, like Corgi, Pug is a very quiet dog and never barks. But when danger is imminent, Pug dogs will also bark to alert their owners. At the same time, Pug dogs are relatively lazy and do little exercise, so they do not need to be taken out frequently for exercise.

3. Boston dogs. Boston dogs are lively, smart and love to play. They have been trained to communicate using numbers. At the same time, they have a relatively small amount of exercise and can be carried out indoors every day. In addition, Boston dogs have strong curiosity, so they always make some funny moves in life, making them a lot of fun to raise.

4. Miniature Schnauzer. Miniature Schnauzer’s IQ ranks second after Corgi. It is very smart and can master the owner’s instructions after training 5-10 times. In addition, miniature Schnauzers have a lively personality, do not like to shed hair, and have strong resistance to diseases and will not get sick easily.