Snakes Multiply

Noah's Ark lands after The Flood and Noah releases all the animals, saying, "Go forth and multiply."
Several months pass and Noah decides to check up on the animals. All are doing fine except a pair of snakes.
"What's the problem?" asks Noah.
"Cut down some trees and let us live there," say the snakes.
Noah follows their advice. Several more weeks pass and Noah checks up on the snakes again. He sees lots of little snakes; everybody is happy. Noah says, "So tell me how the trees helped."
"Certainly," reply the snakes. "We're adders, and we need logs to multiply."