Recent genetic study suggests that some modern-day dog breeds became tiny due to a gene mutation that could be traced back from Canids 53,000 years ago, as well as the following domestication that occurred in ancient civilizations.
Whenever you take your dog for a walk you've surely seen them trot around with a stick back home. If you've ever wondered why they love sticks so many experts say it may be due to their genetics, breeding, or curiosity.