Speak with a local attorney. Although the mall may be "dog friendly" that doesn't mean every amenity is also dog friendly. The Florida Bar can give you a referral: www.floridabar.org
If we do not have a signed fee agreement I am not your attorney and this is not legal advice.
I'm not sure how dog-friendly an escalator ever is or that it's ever wise to take a dog on an escalator, but have you asked the mall to pay the vet bill? If they refused, you should speak to a lawyer. The mall is probably liable for at least part of the bill.
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I agree with my colleagues, that a "dog friendly" mall does not mean that every amenity is "dog friendly." With that said, I would submit the bill to the mall for reimbursement, if they refuse I would consult a local attorney in your area.
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