You need to interact with five robots throughout the game. There are three robots in Midtown, along with one in the Slums and Antvillage. Here are the robots you rub up against to get Stray’s Cat;s best friend trophy:

1. Grandma - Slums
2. Zbaltazar - Antvillage
3. Ledoc - Midtown subway
4. Bonobot - Midtown club / street
5. Alex - Midtown club / streets

Bonobot and Alex can be found on thw streets of Midtown before heading into the club part of the storyline near a police checkpoint.