dog: Reproduction — Infoplease.com

	Site Map \| FAQ in Daily Almanac for Nov 25, 2009 Search White Pages
Skip Navigation Home American Indian Heritage Month Atlas Encyclopedia Dictionary Thesaurus Features Quizzes Timelines Countries Slideshows

Fact Monster Kid's reference,
games, quizzes

Editor's Favorites

Encyclopedia—dog

Reproduction

Female dogs, or bitches, will mate only when in heat, or estrus, which occurs about every six months and lasts from 18 to 22 days. Whelping (giving birth) occurs after a gestation period of about nine weeks. The size of the litter varies to some extent with the size of the dog: toy dogs rarely bear more than 2 puppies, while the largest breeds average closer to 10.

Sections in this article:

Premium Partner Content

Related content from HighBeam Research on: dog: Reproduction

Reproduction and behavior of the Mexican prairie dog (Cynomys Mexicanus).(Notes)(Report) (Southwestern Naturalist)

UF lays off prof, halts program for small-animal reproduction (DVM)

How to ease noise anxiety: thunder, fireworks, sirens and even the vacuum cleaner can cause elevated fear in your dog. Here's help.(BEHAVIOR) (Dog Watch)

Dietary Fatty Acids Alter Plasma Lipids and Lipoprotein Distributions in Dogs during Gestation, Lactation, and the Perinatal Period (The Journal of Nutrition)

Melancholia's Dog.(Book review) (The Modern Language Review)

Rogers, Lesley J. & Kaplan, Gisela. Spirit of the wild dog; the world of wolves, coyotes, foxes, jackals & dingoes.(Brief Article)(Young Adult Review)(Book Review) (Kliatt)

Research from Cornell University in the area of stem cell research published. (Women's Health Weekly)

Vitamin D: The secosteroid hormone and human reproduction (Gynecological Endocrinology)

Canine calculation: Steven Appelbaum has taken a big bite of the dog training business by developing a relationship with national pet retailer Petco to offer services across the country.(Small Business) (Los Angeles Business Journal)

Fig.(Book review) (Chicago Review)

Infoplease Tools