That design has been issued for decades. Most newer coins are only worth 5¢, but if yours is older than about 40 years please post a new, separate question with the coin's date.
A beaver is on the nickel because it is a Canadian symbol, and it was important to the early economy.
because it is a Canadian symdol
that is not clear
NO
On the US 5 cent piece, Thomas Jefferson's home, Monticello is pictured. I think the Canadian 5 cent piece has a beaver on the reverse.
Five cents
Canadian money does not actually have a nickel. They have what is called a five cent piece. A 2002 Canadian 5¢ piece is only worth face value.
Its face value is 5 cents, but the melt value of a 1955-1981 Canadian nickel is $0.09 so the melt value is 4 cents more than the face value of the coin5 cents. It's not rare, and many are still in circulation.
The current brass $1 coin has a picture of a loon, an aquatic bird common in Canada.Older $1 silver coins carry a picture of a voyageur (fur trapper) rowing a canoe. That animal, of course, is a human male.
They're both only worth face value.
If it's been in circulation, maybe face value to 10 cents.
Canadian nickels (1922 and later) never contained silver. A 1967 Centennial nickel is made of 99.9% nickel and is worth about 15 cents in above-average condition.