Probably curiosity, Hazel. LOL. Golly, that Porcupine is so 'different' , nothing like our Echidna. I did miss any other photo's you may posted of it. I'd never have imagined that they would climb a tree.
How many babies would a red Squirrel have? I see she has at least 4 teats. You've got some awfully cute animals in the States. Why couldn't they have been introduced here instead of foxes and rabbits?