Welcome to Hamster Central Tany and Widget!!!
Yay, another Campbells on the board! That's such a cute name
do post pictures if you can, we don't see many opals over here in the UK and it's a lovely colour.
Campbells especially can be a little bitey, but it's early days if you're patient with your taming he may come around. My Alfie will always box my fingers if my hand is nearby, although I can scoop him up no problems and he'll also crawl into a loo roll tube pretty much on command to be taken out of his cage.....he was a rescue and he's come a long way, so I'm sure starting out with a youngster you'll be able to work through the boxing!!!
I'm sure the girl at the pet store seemed very knowledgable and caring......BUT she's made two basic mistakes-
1. Letting you buy a single dwarf hamster - they're a social species and really do much better in a pair or small group. Single dwarves actually have a reduced life expectancy. As a new owner you weren't to know that although you might have done some research first. The deed is done now but you'll know in future.
2. Sending you home with a cage that is far too small. A single unit of habitrail is far far too small in my opinion even for a dwarf - it can be remedied though by buying more (expensive!) add-on units.
I hope Widget continues to settle in well! If you have any questions about anything feel free
and do post pictures if you can!
Just curious - what cage litter did the pet store girl send you home with?