Dead duck

An old lady has a sick pet duck that she loves dearly, but she's broke so she takes him to a cheap veterinary clinic. The vet doc says your duck is dying there's nothing we can do. Devastated she pleads for him to try anything, so he says he'll be right back. He walks back in with a Labrador by his side, the dog places one paw on the duck, nothing. Vet doc says OK one moment. Leaves comes back with a cat, cat places one paw on the duck, nothing. The vet doc then tells the lady that's all he can do but her duck is still dying. Defeated and broken she leaves, upon receiving the bill on the way out its three times higher than she expected hud. She ask the secretary why and she says "it says here you requested additional LAB work and a CAT scan"


Edit: spelling