I've seen a few of my bunnies have what I assume was hiccups. It would last for a few minutes and then stop. The buns seem no worse for it.
It scared me the first few times it happened. I immediately would check them over and hope that it wasn't any kind of neurological twitch or something similar. The bunnie was probably going, " what...hic...what...hic...WHAT!!!...hic...leemee alone..hic...!!"
I can't think of a resaon why a bunnie wouldn't get the hiccups. For instance, I know a bunnie can't vomit and if they did I would be very concerned....you know what I mean??.
If it happened very often or lasted for an extended amount of time I might be concerned. Off to the vet we'd go....tra lah
~Jim