Two males.I had three rats a couple of months ago, and they were really sweet.Get them from the same breeder so they wont fight. It depends. Males are more laid back and more snuggly. They are content to just hang out being petted and fed all day long. They are the quinticential couch potatoes. However, males have a stronger odor (buck grease) and they are typically much larger. Also, males are more territorial and you have to be careful if you intro new rats to the collection (trust me, it is hard to have just two, I'm up to five). Females are a bit more active. They are more likely to play and hand wrestle with you but then will run off to find something else to do. They are smaller and a bit less pungent. They are also more likely to want to go off and explore and find things to build a nest with than to hang out with you all day long. Females are also more likely to get mammary and Pituitary tumors though that can be significantly reduced if they are spayed. Both are wonderful and you can mix them ONLY IF YOU GET THEM SPAYED AND NEUTERED. Never mix them unless you know for a fact this is the case or you will end up with a lot more rats.
No unless interaction from a male rat (such as getting a rat that is about to have babies). two female rats can not have babies
Only if you want likkle baby rats and two male rats fighting over the mummy rat :p
Male and Female.
The two methods of reproduction are sexual (male and female) and asexual (no male and female . . . but simply splitting, for instance.)
A snail is both female and male. They are hermaphrodites.
Of courswe!
Mare female over two years Stallion male over two years and not castrated Gelding male over two years and castrated Filly female under two years Colt male under two years
The bigger of the two is the male
breed two electabuzzes (male and female) or an Electabuzz and a ditto breed two electabuzzes (male and female) or an Electabuzz and a ditto
You will see a little the at the middle of the belly and two thing at the back legs and balls for a male. Female will have two thing at the legs
I added 2 links to pictures in the "related links" section. "One Picture" Male is on the Left, Female is on the Right. Basically the difference is the "holes" on the female are closer together than those on a male. "Another Picture" These two are obviously adult rats, but it gives you a pretty clear picture of the difference.
The classic line up has three male and two female members.