Just found out that @BethesdaGear has restocked the @DallasPetsAlive QuakeCon 2019 Dog and Cat shirts. If you missed them the first time around, seems like you've got another chance to grab some. 
Dogs: https://gear.bethesda.net/products/quakecon-2019-exclusive-bfdoggy-tee …
Cats: https://gear.bethesda.net/products/quakecon-2019-exclusive-anar-cat-tee …
EXTREMELY limited quantities. We are just releasing the holding stock.
