What animal is Arsenal mascot?

Excuse me, I was wondering if you could shed some light on a topic that's been piquing my curiosity lately. It's about the mascot of a renowned sports club, Arsenal. Specifically, I'm curious to know what animal serves as their beloved mascot. Is it a fierce lion, symbolizing strength and courage? Or perhaps a cunning fox, embodying wit and agility? Or could it be something altogether unexpected? I'd be grateful if you could enlighten me on this matter.