Sleeping.

[Jenni85]

Is it normal for piggies to sleep apart at night?

Every evening when the big light goes off and the night light goes on one of them (usually Blossom) will go upstairs and get in the hidey up there. She's usually still in there when I go in to turn the night light off around 11/11.30 but come morning time 6.30/7 (little later on weekends) she's back downstairs and in with Willow.

 

[Siikibam]

They more often than not sleep apart rather than cuddle. I think there is a general misconception that they sleep together. Mine never have but doesn’t mean they don’t get on either

 

[Piggies&buns]

Absolutely normal!
My pair don’t sleep together. The only time I’ve ever seen them in the same hide is if something spooked them and they happened to both run into the same one.