No but it will be in pain for a bit and may get infected (which is more serious and will need veterinary treatment). If you are not good at cutting your dog's claws then you should take it to a professional dog groomer or vet to have this done.
No.
Breeds such as Labradors, Rottweilers, Dobermans, and Boxers are known to have black nails. The color of a dog's nails is often related to the pigmentation of their skin, so dogs with darker coats are more likely to have black nails.
dogs
You could cut a small dogs nails with human nail clippers. Larger dogs nails would not fit inside the clipper so it wouldn't work. It is better to buy a set of clippers made for dogs though. They are made specifically for dogs nails and will work better.
they are called nails
your nails and hair
All breeds may have black nails. Usually, dogs get black nails when they are not take care of properly.
That depends on the length of the nails and how much it hurts when they stand.
That depends on how clean you are and how clean is the dog, and in what environment each on of you moves. Yard dogs will have more microorganisms under the nails than a clerk, but a gardener will probably have more than a dog living in a flat.
No. Dogs cant dig through plastic if they do they will break their nails and bleed to death.
Dogs have five claws (nails) and not only four. A dew claw is similar to a thumb -- complete with a toenail -- but it grows a bit higher up on the paw than the rest of the toenails on that paw.
there is no one answer to this question it depends mainly on the breed of dog not size but dog nails will be worn down and become blunt if the dog walks on hard surfaces eg tarmac