In basic terms, dogs get stuck together after mating when the male's swollen penis becomes gripped by the contracting muscles in the female's vagina. The good news is, this is nothing to worry about.

Now, genetic information from more than 2,000 dogs, paired with self-reported surveys from dog owners, indicates that a dog’s breed is a poor predictor of its behavior.

The dogs were the 14th most popular breed in 2012, but jumped to the number 2 spot in the American Kennel Club’s 2021 rankings.

But if you plan to let your dog mate, you'll want to stick around as Dr. Rebecca MacMillan goes into more detail about why dogs get stuck together when mating, how long it lasts, and what you ...