Lost In Space:
A Day at the Zoo
Original Broadcast: 29 November 1967
Penny is captured by Farnum B, who operates an intergalactic traveling zoo. Don and Judy are captured next, then Will, Smith and the Robot.
This is an episode that shows great insight into the psyche of Major Don West. His only objective is escaping the zoo, even though he's locked in a cell with Judy, the cell is furnished like a 4-star hotel, and Judy is frightened and vulnerable.
Don West is the most focused, disciplined individual in the galaxy, and he's completely out of his mind.