My friend Cameron and I rescued a rat not too long ago, we named her Tweez and she became such a sweetheart. What we didn't know though, is that she was pregnant! She has a litter of 8; 3 males, and 5 females, who have been handled since birth. They already give kisses! If you don't have other rats, you must buy a pair, excluding different sex pairs. $15 for one, $25 for two