Randy rose unsteadily to his feet and moved toward the rear. He made a lurch at him, but Yank leaned out of his reach and looked back, grinning merrily.

“You naughty bear!” Jill cried, half in fear and half in anger.

Randy leaned forward again and pulled Yank back on top of himself with a fierce jerk. As Randy went down, the bear rolled off him and up on the edge of the boat.

Yank went over the side with a splash.

Randy lunged at him, but Yank’s fur slipped from the boy’s fingers. Yank went over the side with a splash into the frigid water. As soon as Yank touched the water, Randy made a grab at him and caught one of his forepaws. Yank screeched in shock and fear at the sudden freezing plunge.

Ted slowed the boat down and turned the wheel over to Jill while he helped Randy pull the Martian animal aboard again. Yank looked thoroughly beaten as he flopped, dripping and cold, into the bottom of the boat. His round little ears were drooping sadly, and the corners of his mouth were turned down. He looked more like a polar bear now, because crystals of frost were growing all over him.

In spite of themselves, the children had to laugh at their little pet’s predicament. As the shiny spikes of frost popped out on his face, Yank would brush at them furiously with his paws. Even his eyebrows were growing icy. This further increased the laughter of the children.

“I guess that’ll teach you to behave, Yank!” Ted chuckled, and offered to take the wheel back.

“Let me drive the rest of the way,” Jill said.