I'm hugely allergic to animal dander. Every fewer person scamming the system bringing on their family pet 'cause they paid some token $$ to get a letter means one fewer chance I'm going to be itching my skin raw or having to reach for a Zyrtec.
I only wish there were more places that could/would crack down; here in California people bring their dogs into grocery stores w/o a care in the world and there's apparently nothing the stores can do against these scammers.