So one of my headcanons is that one day Jack will realize he’s been pining for Bitty, and so to soothe his sad-feels he adopts a little dog.  He names her Puck.  No that’s not a Shakespeare reference, that’s a hockey reference.  She happens to be modeled after one of my work babes who was rescued from a fighting ring, and often gets scared in new places; until you put clothes on her and then she comes to life.  So I decided Puck is the same, and Chowder sends her a little shark costume. I finally decided to draw Puck. You will probably see her again…and her future sister named Pie.  

Edit: Okay thanks to the lovely and very helpful @gabricl it should now be clear. :)