I've noticed my 9 week old kitten has some darker / black spots growing around his mouth and a bit on the inside of his left/ right paws that weren't as apparent a week ago (see first image vs last 2 images).
Does anyone have any idea of what this is (acne? allergy?) and whether or not it's something serious that I should take him to the vet to get checked out?
Thank you for any insight,