Ah, so they are singletons now! Still, they are a damn good age!
I agree with vectis regarding the Leon cage. I see you have solid wooden ramps in there that are at a safe angle (not too steep) so that will help him to get up and down the levels more easily. He looks fantastic!
This is great news concerning a chins lifespan because my wee female is about.....17/18 months...ish. She was around a year old when I took her on from Abby on here mid-summer this year and Abby rehomed her and another one from a previous owner, who said they were around a year old, so that`s all I have to go on as far as age is concerned. If Prinny reaches 3 years + I`ll be over the moon!