They're never relaxed
@Empshok, completely depends on the personality of the pig. I've got 2, one is so alert and skiddish, and only rests as most guinea pigs do, but the most adventurous, where the other one loves to be petted, and will fall asleep to you petting her. But she hates being picked up so you have to get her to climb up instead, and absolutely will not go out into the open where there isn't some cover above her. She will actually sleep on her own too. It's not common for them to actually sleep, and once again completely depends on what they're like. They can be completely comfortable with you and their surroundings, but will never sleep. The same applies to bunnies.
I'm Richard Gere and I approve this message.
@dj evolve fan club, that was a Gerbil, mate
@Brightwell, and a gerbil yes
And a goldfish😉