If I was in your situation, I would get a pair of buck kittens and be
prepared to have two separate cages in case the introduction didn't work
out. If you get the kittens at the age of 6-8 weeks, you should have more
chance of a successful introduction to your older male. The other advantage
in doing this is that when your older male comes to the end of his life, the
other two will still have each other for company.
As your boy has been on his own for most of his life, there is simply no way
of knowing how he is going to respond to newcomers, but your chances of
success are much improved if the newcomers are kittens.
The subject of rat introductions has been discussed many times in this group
and there is a ton of information on it. If you decide to get some
companions for your rat and are unsure about the introduction process,
please come back for more information. Alternatively, you can do a search
in www.deja.com/usenet using the keyword "introduction" or "introducing."
Hope this helps,
p.s. Grapes are fine for rats, but be sure to wash them first. Haven't you
heard of "the grapes of wrats"? ;-)
> We have just acquired a rat from a friend.
> He is about two years old and has never had any company in his cage.
> I know it is better for rats to live together, but would it be OK to
> introduce a companion (i.e. a younger rat) to him at this stage in his
> He is a well mannered rat and to our knowledge has never bitten anyone in
> his life, would he be so friendly towards another rat?
> (P.S. grapes are OK for rats aren't they?)