Children’s book with lion that can make itself heavier

[Ana]

I read this in probably ~2005-2007. There was a range of animals, and I remember that there was a little lion that didn’t want to be picked up and could make itself surprisingly heavy to avoid being moved.

[Capn]

Hi Ana,

Is this a picture book, or a chapter book/novel?

If a picture book, could you describe the sort of illustrations?

Can you remember any other animal, or any other want/effect? :)