Gnasher is the pet dog of Dennis the Menace in the British comic strip Dennis the Menace from The Beano. First introduced in 1968, in issue 1363 dated 31 August 1968, seventeen years after Dennis the Menace started in The Beano. Dennis's first strip also featured a dog but this dog was unnamed and looked very different from Gnasher.

Gnasher is the pet dog of Dennis the Menace in the British comic strip Dennis the Menace from The Beano. First introduced in 1968, in issue 1363 dated 31 August 1968, seventeen years after Dennis the Menace started in The Beano. Dennis's first strip also featured a dog but this dog was unnamed and looked very different from Gnasher.