Plot summary
Grandpa Arnold ( David Huddleston ) visits the Arnolds, and Jack is clearly on edge. Among the gifts he brings for the Arnold kids, one is a surprise for Kevin—a puppy. But Jack forbids it, thinking that Kevin can't handle the responsibility of taking care of a pet. He reluctantly agrees to let Kevin keep it, so long as he is stringent with taking care of it. Jack and Grandpa Arnold clash throughout the episode, culminating in a fight at the dinner table about (among other things) bringing a pet in to the home without consulting anyone first.
Kevin is tired of the fighting, doesn't want to keep the puppy if it brings so much grief, and just hates seeing two men that he loves and admires acting this way. Grandpa leaves the next morning, and Jack is waiting outside with the puppy. He reasons with Kevin that the family needs a dog, and that it would be good for him and Kevin as well. They then walk the dog together. Guest-starring: David Huddleston in his first appearance as Grandpa Arnold Absent: Danica McKellar as Winnie Cooper.
Credits
Adapted from Wikipedia contributors, The Wonder Years season 3. HTML formatting and reference markers removed.