Today Gizmo, 3 y/o, began not eating or drinking, rapid breathing, crying when back half touched, threw up small amt of foam once. Will walk & jump up when bothered-he wants to be alone. Is not passing any blood or discharge, no visible signs of injury, eyes appear fine, no signs of toxicity-I've seen that before. Thought his breathing may be stress but not sure. Gizmo gained weight in last several mos but my husband says Gizmo hasn't been irritable last couple wks. Gizmo is a Daddy's boy so my husband would know. If no improvement taking to vet tomorrow but any info or advice would be appreciated. Thanks.