[DOC] [TLE] Breeding Age - Rat Guide [PAR] Feb 14, 2004 ... Reproductive time frames will vary between different rats and/or ... In rare 
circumstances breeding has occurred as early as 5 weeks. ... There is no 
evidence of increased problems during pregnancy or birth in females bred up to 
a year. ... In the laboratory the traditional breeding age begins at 3-4 months... [DOC] [TLE] Rat Reproduction: Mating, Gestation, Birthing, and Growth [PAR] Rats can reach sexual maturity at 5 weeks of age, so the sexes should be 
separated ... Females of breeding age come into heat all year-round, every 4 to 5 
days, unless ... and even then, they may come in heat once or twice early in the 
pregnancy. ... The best time to breed a female for the first time is at 4-5 months of 
age. [DOC] [TLE] Breeding Mice, mating to birth - The Fun Mouse [PAR] Optimal breeding age and number of litters. ... Mice *can* get pregnant as early 
as 4 weeks. ... Depending on the line, a female shouldn't be bred much past 8 
months ... A mother mouse should have a 3-4 week recovery period, beginning 
after ... Therefore, a doe will usually become pregnant within 1-5 days from the 
time... [DOC] [TLE] Rat Breeding/Rat Babies - 80stoysale! [PAR] Rats can breed as young as 4 weeks, altho usually won't until 6 weeks. ... Female 
rats typically will accept new cage mates at any age, while Males tend to .... until 
adults (8 months to around 1 year) and most commonly, rats will be bred before 
..... Babies should not be left in longer then 5 weeks or the females may become... [DOC] [TLE] Can a baby rat at the age of 1 1/2 months be pregnant? | Yahoo Answers [PAR] Sep 23, 2007 ... This is comparable to an 8 year old child having a baby. ... Ethical breeders/pet 
stores will have separated the sexes by the time the babies are 5 weeks old to 
assure that ... A mom-to-be will start nest building 3 to 5 days before giving birth. 
... It is next to impossible for rats to get pregnant at 3 weeks of age. [DOC] [TLE] Rat Breeding: Part 1 Biology - National Fancy Rat Society [PAR] Nov 26, 2012 ... A rat can reach puberty as early as five weeks although six is more normal. At this 
age a doe is not physically mature enough to raise a litter so you need ... It is 
better not to breed with a buck before four months and even then make ... 5) the 
doe has a number of mature eggs ready for release in her ovaries. [DOC] [TLE] Advice for the Novice Breeder - National Fancy Rat Society [PAR] Nov 26, 2012 ... There are several things to consider before breeding fancy rats: ... It is 
recommended to choose a doe between 5 and 7 months of age for her first litter. 
... It is advised to never mating a doe who is over a year old for their first litter. .... 
By about two weeks you will start to notice the doe becoming fatter and... [DOC] [TLE] Start Here: Rat Basics for Pregnancy, Birth, and Babies - JoinRats [PAR] How soon after giving birth can New Mom Rat get pregnant again? ... Wean and 
sex baby rats no later than 5 weeks of age ... The average pet rat owner does not 
possess the skill or knowledge to breed rats effectively, taking ... neuter and then 
successfully introduce the father rat (Angelo) to his 6 month old sons, and watch... [DOC] [TLE] The Laboratory Rat: Relating Its Age With Human's [PAR] Keywords: Adult, human age, laboratory rat, physiology, puberty, rat age ... [5] 
They are thought to have originated in some parts of Asia. ... by the growth of the 
roots that starts approximately at the age of 2.5 months, ... Thus, one human year 
almost equals two rat weeks (13.8 rat days) while .... Reproduction and breeding. [DOC] [TLE] firstbreeding [PAR] Breeding Rat Terriers For

Question: Of 5 weeks, 5 months or 5 years, the earliest age at which a rat can begin breeding
Answer: 5 weeks