Hi, unfortunately all my mice have passed now but I thought I would share my views from when I had them, so I brought four black and tan fancy mice all brothers from a respectable breeder, when I got them I asked the breeder Cathy if they could go into together as I read that it isnt a good idea she informed me they have grown up together so they will be fine, however, after about a week one of the mice that we named Hannibal started to pick on the other three it gradually got worse and worse and we decided that we could no longer keep him so Cathy took him back and used him as a stud mouse so we was left with three Mr. Jingles, Bob and Jersey they all seemed fine with each other for awhile but soon fights broke out again and let me tell you it really isnt a pleasant thing to see they cling onto the backend near the base of the tail, we ended up buying seperate cages for all three in the end so my advice is never to home male mice together they will kill each other.
I have to say it has almost been a year since my furry babies have passed and I still miss them dearly they are such characters and it is so true you can train mice they are like little dogs.
Mr. Jingles would roll a toilet roll tube over the table to my hand to recieve a nut he loved doing tricks or stand on his hind legs and walk he was remarkable.
Male mice do tend to smell an awful lot, there urine really does stink and they tend to spray quite often apart from this they are clean animals and will toilet in one corner of their cage, they like alot of room even though they are small as they are very active animals, make sure you get a cage specially designed for mice as they can squeeze through the tiniest caps and you will find with a normal hamster cage they will escape quite easily.
Keep an eye on their teeth and nail growth as they can grow out of control see a vet if you are worried I done this and they quickly resolved this problem for me.
You must handle them on a regular basis even if it is for a couple of minutes a day they tend to nip if scared but it feels nothing more than a scratch but once settled they will happily lay on your hand mine quite often would run up my arm and would sit on my shoulder like small furry parrots.
They are unfortunately prone to cancer and three of mine sadly died from this they also live quite short lifes even when healthy but saying all that they are such little charmers and are full of character always ready to entertain you and fill you with happiness, I would watch them for hours running around, pulling things into their little houses, they tend to gather most of their food and will either bury it or hide it in their homes I would not advice you to give them bread etc as this will go mouldy, they are brilliant pets and I really think if you own one you are blessed as they brighten your day no end.