I'm thinking of buying a rat and do you have to buy 2 or can you just have 1 on its own? What rat is the best rat to buy and what rat can you teach it tricks! Are they much better then hamsters? Are rats a fun pet to be around and do they liked being picked up and is there a rat cage for £50 in pets at home and please tell me what accessories do you need like wot type of bedding or do they have sawdust? Thx