How to integrate another boy with a lonely one.

[tessygem]

We purchased 2 Guinea pigs about a month ago. After less than 2 weeks one became very ill and after an emergency rush to the vets unfortunately had to be put to sleep.
The remaining one is not settling very well to being on his own, is not eating much and squeaking continuously. He has lost of cuddles and talk to time, but unsure how to introduce another one to him. He is about 6 months old. An thoughts appreciated.
Thanks

 

[Piggies&buns]

I'm so sorry for your loss.

In order to care for him during the time he is alone, switch from the routine weekly weight checks and instead weigh him daily. If he is losing weight then step in with some support feeding to stop weight loss and replace lost hay intake.

We would advise that you speak to a rescue centre in order to obtain their help in finding a suitable character compatible companion. It is the safest way to ensure a good successful bond. They can help with dating.

https://www.theguineapigforum.co.uk/threads/guinea-pig-forum-recommended-rescues.196734/

However if he is struggling to be alone then his companionship needs become urgent and you may not have time to wait for a suitable companion if rescue centres do not currently have any suitable single candidates.
If you cannot wait, then it can be best to buy a single piggy from a pet shop. There is an element of risk here as you won’t have the benefit of dating to ensure the two piggies are compatible before committing. In the case of a bonding failure, living side by side in separate cages is the plan b.
Do not be tempted to bring home two boars to try to bond with him. Boar trios have a high failure rate particularly amongst teenage boars.

This guide will help you during the time he is alone -
Looking After a Bereaved Guinea Pig

This guide explains how to carry out a bonding -
Bonding and Interaction: Illustrated social behaviours and bonding dynamics

Some further guides
A Comprehensive Guide to Guinea Pig Boars
Dominance Behaviours In Guinea Pigs