Hi everybun, thank you for the replies! 
I won’t tell Thumper you called him a she, he’s very sensitive about his masculinity since being snipped!
He sulked for hours when he saw that I bought him a pink grooming brush! 
Sorry for my ignorance, but what is a false dwarf?
Is that meaning a Nethie cross?
I thought Rex breeds had to have the short, plush, velvet fur and short, curly whiskers? Or can they still have the gene without the obvious characteristics?
@Jerseygirl – Thank you! He is a little sweetheart.
Thumper and my mum’s cat were stood at the back door for ages staring at each other, Thumper was staring at him without the cat knowing and when he turned round, he looked startled at finding a black fluffball with big ears staring at him! 

@Eepster – Just looked up Satin on Google, are they always that big? I’m not sure how much Thumper weighs but I always thought he was one of the smaller breeds.
Again, thanks everybun! 