Gio serenading a carriage full of commuters

Gio seems to have taken to "singing" on public transport. Whether it is his chase instinct being activated by scenery passing outside, all the bells as the doors are unlocked, the experience seems to really excite his senses and motivate him to squeak. I will readily admit that it probably wasn't the best time to accept a request to stroke him, but at that moment I would have done anything to quieten him down or at least distract from the noise. Hopefully we can challenge this behaviour as, otherwise, longer journeys will be unbearable.