Мільйон нащадків від двох щурів? | A million descendants from two rats?

Could two rats produce a million descendants in a year and a half? That number is possible only in a purely mathematical model where every generation reproduces without limits and all pups survive and reproduce. This does not happen in nature: food and shelter, mortality, disease, competition, and age-related fertility change the outcome. Female pregnancy lasts about three weeks and a litter often averages around seven to nine pups, but actual population growth depends on conditions.