I don't believe this exists already, so, basically as the title says - a page to be able to change your pets headshot en masse, instead of having to do it one-by-one. I suppose the page set up could be similiar to the page we have for pet order, instead when you click on the pet, it brings up the ability to drag and drop where you want the headshot on that specific pet. Since we can potentially have a lot of pets (a new user, if they were to buy all of the current options, I believe can have up to 55 pets?), I think this could be pretty useful.
(A new user starting today can have up to 65 pets immediately, there are 55 buyable pet slots currently)
I support this though, or at least some kind of way to navigate to other pet headshot pages from the editing page. When I go through and change my pets' headshots, I tend to do a bunch at once and I usually just open the headshot editor in a new tab so my Pets page doesn't have to reload, but it'd still be easier to be able to navigate somehow from the headshot editor if it can't be done to show all the pets on the same page