Adopting a baby guinea pig

[Haru825]

I'm adopting a baby guinea pig from the local shelter to be a companion for Butter (M 10 months). I read that in an article 4-14 months old is when the boars get a bit hormonal, do I need to be worried about Butter bullying the baby guinea pig?
Also since I'm adopting from a shelter should I wash the baby guinea pig and quarantine him for a few days?

 

[Siikibam]

Young piggies under four months shouldn’t be quarantined. Their need for companionship comes before the risk of passing anything on to your existing ones. So you will have to bond them as soon as you bring the new boar home. Please double check the sex and book him in for a general check a week after he comes home.

There shouldn’t be any bullying but there will be dominance displays from him. This can go on for a further two weeks once they’ve moved in together. Just be careful not to step in too early. You’ll have to do it in a neutral place with just a pile of hay in the middle. You can cover the area if possible, to make new pig more comfortable. You have to thoroughly clean out the cage - change bedding, wipe the base, wash hides and rearrange. Make sure you have two of everything in there and that all hides have two exits. Also make sure it is at least 150x60cm.

Good luck!
Dominance Behaviours In Guinea Pigs
A Comprehensive Guide to Guinea Pig Boars

 

[Piggies&buns]

to add, please don’t wash the baby. Guinea pigs don’t need baths unless there is a medical need