ThunderCover Dog Tag Silencer The ThunderCover is great for silencing those noisy dog tags Dog tags will remain easily readable through the transparent silicone ThunderCover Tired of those pesky dog tags waking you up when little fido decides to start scratching at 2:30 in the morning? Now you and your pooch can stay Insanely Calm with ThunderCover. The durable silicone cover will ensure those noisy tags no longer drive you nuts.