A female black rat starts producing around the age of 3 months.
Roof rat reproduction rate.
Rats reach sexual maturity after nine weeks meaning that a population can swell from two rats to around 1 250 in one year with the potential to grow exponentially.
In general the mother rat will deliver a new pup every 5 10 minutes.
Roof rats give birth to about 5 to 8 young after a gestation period of 21 to 23 days and may have up to 4 litters a year.
Since they live in warmer regions they re able to reproduce year round.
The common lifespan of these rodents is about one year.
A female rat typically births six litters a year consisting of up to12 rat pups although 5 10 pups are more common.
The roof rat s adult head and body length is about 13 to 18 inches long including its tail the rat gestation period is normally 22 days but can vary from 21 to 23 and rarely to 26.
Roof rats are prolific breeders and multiply at a frighteningly fast rate.
Roof rats are long and thin rodents that have large eyes and ears a pointed nose and a scaly tail.
They prefer nuts plants and fruits to grains or high protein stuff such as scraps of meat.
A female rat typically births six litters a year consisting of around 12 pups.
A postpartum pregnancy will last 28 days.
Roof rats have soft and smooth fur that is typically brown with intermixed spots of black.
Baby roof rat damage.
Though the most popular breeding seasons are fall and spring they may breed through the year if there is an abundant supply of food and suitable climatic conditions.
Adult roof rats measure 6 8 16 20 cm when combining their head and body length.
In dense populations these rodents will establish a social hierarchy wherein dominant males mate more than subordinate males.
Next the contractions will cause her to stretch out while her sides suck in in a most amazing way.
It s no secret that rats can reproduce prolifically but the numbers they can reach are staggering.
Products for control of roof rats.
In rats the average litter size is 6 13 pups.
The average female gives birth to three or four litters annually and each litter contains between five to eight roof rat babies.
Two weeks into the pregnancy the mother s abdomen will usually.
The first sign is a bloody discharge from the vagina.
Roof rats may be identified by the following physical features.
Blind and hairless at birth roof rat babies develop quickly.
Newborn rats may reach independence and reproductive maturity at about 3 months.
Roof rats are prolific breeders.
And also because the norway rat can quickly adapt to the changes in the temperature compared to the roof rats.
Roof rats possessing a long tail.
Their undersides are often white gray or black.
