Happy rat hiccuping

Spike and Guybrush spent the first night in their new huge Martins R-695 cage and seem quite happy about it. So much so that Guybrush gets the hiccups. Both of them have the strange trait of often getting the hiccups when they’re happy and being petted in their hammock in the mornings, there have been times when I go to pet them and they both start hiccuping in unison. They are perfectly healthy and I’ve heard of other rats doing this, so... silly and cute!