I'd think they might have had the hair between their pads trimmed with the clippers and be slightly scratched by that. Were they licking their feet?
No feet licking at all but their pads could have been scratched by that. It's never happened before, or at least that we've noticed. Another thought came to mind-we pass by a number of bushes that drop small dark blue/black berries and they may have squished some with their feet. It's possible it was just coloring from those that may have turned red.
Don't know what's up with that, but, I think there may be some kind of conspiracy going on. You think?
Undoubtedly! :B