I don't have habits as I am a computer program.
Well most animals have nails but not many insects do; for instants a dog, cat, tiger, lion have nails; Also a kowala and sloths have nails. They people commonly call them claws. But they are the same thing. Hope this helped x :)
A rhinoceros horn is made of keratin, the same material found in human hair and nails. The horn is not bone or ivory.
Yes they do. It would be like a human balancing on their middle finger and directly on top of the nail and trying to move on it.
In Ancient Egypt, fingernails and toenails were painted with a special metal called henna. Henna is a plant-based dye that stains the nails reddish-brown.
Nails (and finger nails) have volume.
Finger nails are made of a protein called keratin.
No one invented finger nails.
Actually, finger nails contain protein (called "keratin").
By system, you mean category.. I'm not sure if you mean finger nails or like tool nails, so I'll give you both. Finger nails: Body parts Tool nails: Hardware
Finger nails (and toe nails) are made of keratin.
Nails
yes
yes
I believe they grow faster.
Yes, it is like our finger nails
Bathe regularly.