[Ragou]

I'd go to the vet just for a routine check up every year anyway. If it hasn't been done in a while, I think it's absolutely worth it as a preventive measure. If your vet tells you that he's completely healthy and you're doing everything fine, the happier you can be!

I'd also say try to change and enrich his environment as often as you can afford to stimulate him. Buy him live insects that he can hunt for. Place a dig box in his cage or mutliple tunnels or toilet rolls or paper bags (mine loves the latter). Interesting new (but safe) smells. Enlarge the enclosure. Let him explore your home from time to time under supervision. There are so many fun things you can do with/for your hedgehog!

To avoid him gaining more weight, you can change his diet and also consult a vet about it.

 

[Ragou]

Thanks a lot for your recommendations and advices. I will book an appointment with the vet.

Yesterday evening I moved things around in his enclosure and added a new tunnel, plus I let him do some free exploration in a safe room for 5-10 min (first time I tried that, he seemed like he was really wondering what was going on!), and the following night he seemed to be a bit more active, so that's make me optimistic this might be the way to go.

Glad to know I could help yeah if you haven't let him out before, it might be scary first. Mine mostly does 10 min exploration (at least in my presence) as well, because he then hides and balls up in a place he finds comfy enough, but it's still more than nothing.