battery on the mini petzzz (Specifically the tabby). How do you replace them?

The cat was a gift so I don't know. We have the dog which is bigger and it has a battery box on its bottom.

Is the mini cat glued to the bed or is the bed separate?

Its not a bed but a blanket and it is attached.

When ordering the golden retriever, what is the difference between minis, originals and what does -1 mean. i am confused as to which one to order.

the yellow cat and all the other perfect pets are the biggest disappointment I have ever paid good money. The are like carrying a brick around because they are hard as bricks and nothing moves on them at all. I bought 3 of them for Grand kids, I expected the little dogs and cats that I saw on Face Book. I also ordered 3 of the mini's from the FB advertisement. That was October 16. I have yet to see hide or hair of them as of today Dec 12. Oh yeah, the three perfect petzzz arrived on 3 separate days in boxes that were smashed to pieces with no return label or receipt or even a packing slip. So I would advise you to buy none of the above. One thing I forgot, you put a D cell in the Perfect Petzz and a quarter size spot on the animals hip begins to Breathe the box says this will last up to 3 months.