Do you pay duty on a dog purchased in Canada when returning to the US?

When returning to the U.S. with a dog purchased in Canada, you generally do not pay duty on the animal, as dogs are usually exempt from import duties. However, you may need to provide proof of ownership and ensure that the dog meets vaccination and health requirements set by the Centers for Disease Control and Prevention (CDC) and the U.S. Department of Agriculture (USDA). It's advisable to check the latest regulations before traveling, as requirements can change.