Thank you everyone.
We had noticed he had been a little slow over the last few weeks, but we assumed it was due to the temperature drop.
It has been a bad week for us here, we lost our little rescue guinea pig too you see.
Raymond doesn't seem too withdrawn but I know he will be lost without Rudolph as they were always together.
I am not sure what to do regarding Raymond now, he has never spent a day without his brother.