Lakeland, FL Homefacts Overview of Polk County includes data on offenders, schools, foreclosures, environmental hazards, and more.
Adult mice have bodies that are 3-4 inches long with 3-4 inch tails. Adult rats are far heavier and longer: they can weigh ten times as much, averaging 350-450 grams for females and 450-650 for males (with an overall range of 200-800 grams). They have 9-11 inch long bodies and 7-9 inch tails (ref).
Overview of Reproductive Process. As mice breed throughout the year, a single female produces between five and 10 litters annually. Each brood can contain up to 12 young, but the average litter size hovers around five or six babies. Young mice grow quickly and usually only need three weeks before they're fully weaned from their mothers. The pests achieve sexual maturity after five to seven weeks.