Peanuts by Charles Schulz for July 19, 1972
Transcript:
Lucy and Woodstock stand next to the tree. Lucy looks up and shouts, "What are you doing up in that tree?"<BR><BR> Linus climbs in the tree and says, "Looking for something . . . Can you see Snoopy? We climbed up here together, but now I don't see him . . ."<BR><BR> Lucy says, "Beagles can't climb trees . ."<BR><BR> Snoopy falls out of the tree and lands on his head. He thinks, "You're right!"<BR><BR>
When I was a kid (probably near when theis comic was published), I had a little yeelow mutt dog that could and did climb trees.