Sam was one of the last parents to pick up kids from preschool, where he was told, "You want to take Snowball home for the weekend." (It appears the teachers may be getting tired of having Snowball at their homes every weekend).
Oscar did not realize there was an additional mammal in the house for 10 minutes. After puffing up, a staring contest ensued. Oscar clearly won, as after about 5 minutes, Snowball got bored, turned around and lay down.