B&W, color modification or leave alone?

What should I do with a pic like this? I plan on printing a poster-size.

fix white balance, then leave it alone

Tried to fix the white balance. This better?

yup much better
ok now i can see that some shadows could do with a bit of reducing, but try not to lose the detail in the white fur

Not sure what you mean. I tried messing with the shadows reduction and it made the pic a bit brighter/less shadowy I THINK, lol. Not too much experience with PP here.

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a bit like this... (did a bit more on white balance as well)

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^ Super edit, and what a great photo for the wall!!