Take another look at the sentence:
Mopping up the muddy paw prints, the kitchen tile gleamed in the afternoon
light.
Mopping up the muddy paw prints, a participle phrase, comes right before kitchen tile, an illogical target. People, not flooring, have hands that can hold a mop! Before you continue, review the rules for misplaced and dangling modifiers.
Go back to the sentence to try again.