Ace! I got a Horstashio in my garden, and by feeding it loads of apples, it decided to stay! Not that I kept it for long, as watching an episode of the TV series had showed me that feeding them a blackberry and a daisy turned them into a Zumbug. So I did that!
Now I have a Zumbug to play with. However, Zumbugs and Horstashios fight, so I’ve posted it to myself whilst I set about breeding Horstashios. And Buzzlegums.