No, but if you have sensitive gums it will bleed. Sensetive gums may be caused by lack of brushing or having dental treatment.
no there is no black but just pink
The peroxide is a chemical which bleaches the teeth as well as gums if it comes in contact with them. You are not supposed to put the strips on your gums, but it will go away within a day.
gums should be pink, no other color, generally if they are another color, they may be infected
No, they are not supposed to.
If your cat's gums have recently turned black it probably has an infection, like gum disease or something. TAKE IT TO THE VET RIGHT AWAY. A cats gums are supposed to be a pinkish red color. If there are any spots of black, like little tiny dots, make an attempt to brush your cats teeth, it might just be food. but if you cats gums are black, don't hesitate to take it to the vet.ADD:Actually, some cats have black colouring/blotches on their gums and the roof of the mouth. This is a completely natural pigment to their mouths. However, if your cat's gums are not usually black and have turned black from a light pink colour then it is advisable to take it to the vet as soon as possible.
Um... What?
go to the dentist .....
yellowish
I've seen them in many shades of pink. If their tounge/gums are blue then they NEED A VET, THAT MEANS THEY DON'T HAVE ENOUGH OXYGEN IN THEIR BLOOD, they will die soon if you put this off.
The infected areas of the gums turn red in color and have whitish herpetic lesions
green.