Why do my pigs like being in hideouts together

[Launey]

They have 4-5 hideouts in their cage at all times but they often choose to be in the same hideout I'm not sure if this is normal or maybe they are cold, it is 70 degrees in my house at all times

 

[Truffolo]

Giving them extra bedding hay to hide in and burrow is worth adding. It gives them lots of enrichment and fun as well as allowing them to choose whether to be warm or to sleep in a cooler area. It's really great that they get on so well. They can drag it around to suit themselves.

 

[Piggies&buns]

70F is 21c which is right in their comfortable zone so they probably are not cold.

As long as every hide has two doors so both pigs have the chance to get out freely, then They probably just like being together. Most piggies will not cuddle up together so it’s nice that yours do, enjoy it!