I had to use a long nose pliers to remove the battery from its slot where it pops up because of spring action. The last shoot was only a month ago. How could it expand that fast. Battery is one recommended by Fujifilm.
I know manuals say to remove batteries when not in use for an EXTENDED PERIOD of time. How long is that?
Can you restore the enlarged battery to its former size? Hoggers here who have several cameras: how sure are you that a battery is not “hulking” in one of them. Do you have a method?

After 30 years I am retiring from B&H Photo as of 05/03/24. My job is being transferred to Geoffrey Ngai <gngai@bhphoto.com>. 

Working for B&H and interacting here with all of you has been a singular and entirely satisfying experience. I want to thank everyone here who helped make it so. When I started at B&H I never expected to be here for 30 years, Now it's time to step back, stop setting the alarm clock every morning, and spend more time paying attention to my wife. 

Best wishes to one and all.

Absolutely and solely a matter of personal taste. To me, creatures (and humans) look better on canvas, because the texture of canvas more closely approximates the texture of feathers, fur, hair, skin, etc. I reserve metal for landscapes, which (again, just my opinion) look fantastic on metal.

If you decide to go with metal, I would avoid the sheer options. Those allow the natural aluminum color to show through a bit. I like those surfaces for metallic subjects such as autos, boats, planes, etc.

As suggested by someone above, if you decide to print on canvas I'd suggest boosting saturation a bit, as canvas presents noticeably less vibrant prints than does metal.