Breeding Rats
Want to breed your rats? Well beware! They can get out of hand quick if you're inexperienced. Here are a few links that discuss the entire breeding process from the mating to weening the pups. :)

Fun Fact: Rats are extremely social and affectionate. They prefer the company of other rats and domestic rats love being with humans too! They often become depressed and lonely without companionship. They love to play and actually make happy noises when they play! :D