Who’s Following Whom?

These accounts seem to have a good mix of different types of followers, ranging from accounts of their owner’s friends, other pet accounts (both from acquaintances and from others within the community who stumble across the account for whatever reason and decide to follow using their own pet account (so that it appears that these pets have virtual pet friends), and companies who sell pet related items and have either actively added the account (likely due to searching through the #petsofinstagram tag or the like) or who have been tagged by the owner on the pet’s account because of the use of one of their items in the photo.