This adorable (and useful) series of prints is by Etsy seller Ink and Sword.

Pet Public Service Announcement Prints by Ink and Sword in other for humans

Pet Public Service Announcement Prints by Ink and Sword in other for humans

Pet Public Service Announcement Prints by Ink and Sword in other for humans

Pet Public Service Announcement Prints by Ink and Sword in other for humans

[via Moderncat]