How Do Dogs Reproduce?
Last Updated Mar 26, 2020 2:52:30 PM ET
Dogs give birth to litters, meaning multiple puppies. They first come into heat and then must have sex in order to become pregnant.
A female dog comes into heat for 18 to 21 days every 6 months. Larger breeds only go into heat once a year. She will be attracted to male dogs approximately 3 to 4 days afterwards. The two dogs become stuck together during the mating process. This is called being tied together. Pregnancy in dogs lasts about 2 months. Labor in dogs is similar to human labor. The dog begins contractions before giving birth. After birth, she removes the umbilical cord.
More From Reference

What Is the Difference Between Salary and Wages?

How Many Minutes of Daylight Do We Gain Each Day? And Other Daylight Saving Time Facts

Understanding SSI: Supplemental Security Income Basics for New Applicants

What Can the History of Polio Teach Us About the Coronavirus Pandemic?

How to Use a Personal Loan Calculator

Mailing a Letter to Japan? Here’s How to Calculate International Postage