Answer:
1st part of your question:
Lamassu were supernatural spirits, sometimes called demons or genies depending on which language you're translating from, who served to protect the gods, as well as the important human structures. Lamassu always had the body (and therefore strength) of a bull, but the head (and therefore intelligence) of a human.
2nd part:
They most often appear in pairs, carved on either side of the entrances into royal palaces, which they were believed to protect from evil. As a unique artistic feature, these lamassu were often carved with five legs, creating that illusion of four visible legs from both the front and the side views
Explanation:
Hopefully this helps
