For the roller coaster, see Sewer Rat (roller coaster) . The brown rat, also referred to as common rat, street rat, sewer rat, Hanover rat, Norway rat, brown Norway rat, Norwegian rat, or wharf rat (Rattus norvegicus) is one of the best known and most common rats.he brown rat is the species common in England, and best known throughout the world.
1 Yes,you can get pregnant after ovulation. 2  There is a 25% chance of getting pregnant during ovulation,and a 5% chance when not ovulating. 3  The egg does not survive for more than 24 hours after ovulation unless conception has occurred.
The question of how soon after you stop breastfeeding can you get pregnant is slightly complex, because you do not need to stop breastfeeding to get pregnant. You can get pregnant while you are still breastfeeding although the chances of this are slim. It is a common misconception that breastfeeding poses as natural birth control.