You're a moron. See below:
"On November 17, 1981, school President Donald Kennedy declared that the athletic teams be represented by the color Cardinal in its singular form.[1]Stanford has no official mascot, but the Stanford Tree, a member of the Stanford Band wearing a self-designed tree costume, appears at major Stanford sports events. The Tree is based upon El Palo Alto, a redwood tree in neighboring Palo Alto that appears in the Stanford seal and athletics logo."
-Wikipedia
And, I see it coming, "Who trusts Wikipedia? Anybody can mess with Wikipedia." But, being a SF Bay Area native, the above is common knowledge.