This is Baggins the gerbil.
The weather is colder, and my brother, Bilbo, and I have been putting on our Winter weight; just like all those animals in the wild, who are preparing for food to be scarce, and - in many cases - hybernation.
The human caretakers insist we don't need to worry about it, since food for us won't be scarce like it often is for our wild relatives at this time of year, but we aren't taking any chances.
Besides... The nibbles are very tasty, so it's really difficult to resist the urge; especially when our instincts are telling us to fatten ourselves up ready for the cold months ahead. I mean, could you resist a bowl full of your favourite nibbles? Not to mention the offer of things like Cheerios and cheese on top of those things? I didn't think so!
Anyway, the Mummy human says a little extra fat won't hurt us, and that - when Spring comes, and we slow down with the eating again - we'll soon get the extra weight back off with all the digging we do.
In the meantime, if we find ourselves suffering the food scarcity our wild relatives often have to suffer during Winter, Bilbo and I know we'll be OK. And, if we don't... Well, like I said, the nibbles are tasty, and I agree with the Mummy human that we'll soon get the extra weight off when Spring arrives.