can we keep them as pets?
Yes, they are sometimes kept as exotic pets.
Wolf
Wolves and wolf-dog hybrids are sometimes kept as exotic pets. 
from where does the word 'wolf' come from? From Old English. what do they prey on? Large sized wild herbivorous hoofed mammals. what does it represent in mythology? According to the Pawnee creation myth, the wolf was the first animal brought to Earth
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Wolf [SEP] As pets and working animals
Wolves and wolf-dog hybrids are sometimes kept as exotic pets. Although closely related to domestic dogs, wolves do not show the same tractability as dogs in living alongside humans, being generally less responsive to human commands and more likely to act aggressively. A person is more likely to be fatally mauled by a pet wolf or wolf-dog hybrid than by a dog.