Wasgij Original Puzzle 18 Uproar at the Vets

It is a fairly normal day at the local veterinary surgery, the animals and owners are waiting for their turn to see the Vet but then the door opens and the latest patient appears. What has caused such consternation amongst the occupants of the waiting room? Why has the tortoise hurried under the table? Who or what has just arrived to cause such a reaction amongst clients, pets and the staff? Imagine you are the nurse trying to help pull the customer over the counter and out of harms way and try to imagine what she is looking at – that is what you are puzzling.