He looked. The beasts certainly were gay. One of them leaped from
the airless surface of the asteroid and sailed over its fellow. He
had never seen them do that before. Usually they clung to the rocky
surface. Another was spinning around oddly, as if it had lost its sense
of balance.
Louise said, "_They've_ swallowed the tablets! Over a hundred
doses--enough to drug every beast on the asteroid!"
For a moment Palmer stared at the gamboling alien drug addicts. Then
he put on his spacesuit and took his gun, and, without the slightest
danger to himself, went out and shot them one by one. He noted, with a
kind of grim envy, that they died happy.