in the United States. Established in 1903, under the presidency of Her Majestyâs Minister at Washington, D.C., W.A.F. Baron Gevers, the chamber has promoted commerce between the Netherlands and the U.S. for more than a century.
Complete Physical Maturity: Mice are not done growing until they are between 3 and 5 months of age, depending on the line. Mice should NEVER be bred until they are at least 12 weeks age. If you don't know the line really well, wait until at least 12 weeks, if not longer.wild mice live longer.. around 5 years in captivity, though only around 6 months in the wild due to predators and environmental factors). Maturity: 4 - 8 weeks of age, varying from line to line and mouse to mouse.
Female deer mice usually have 3 to 5 young per litter (range 1 to 8). The gestation period lasts for 21 to 24 days. There are 2 to 4 litters per year with the surge of reproduction occurring in the spring. They begin to breed at 5 to 6 weeks of age.ppearance: Adult deer mice have a head and body length of 2 3/4 to 4 inches, a tail length of 2 to 5 inches and a weight of 3/8 to 1 1/4 ounce.