Dogs are a human’s best friend and I have no doubt about that. We became very close to each-other, and we cannot imagine our life without our four legged buddies. If you already have a dog, you probably know the lifespan of your pet. If you don’t own a dog, but you want to get one, you might wanna take a look at this, and learn what kind of dog lives the longest.
Lifespan 18-20 years
Chihuahua is the smallest dog breed. They weight from 4-6 pounds. These dogs do not prone to genetic disorders, but they suffer from hypoglycemia and have problems with their teeth.