Hello & welcome, I am Dr. B, a licensed veterinarian and I would like to help you with your wee one today.
How long since he passed urine?
Any retching, gagging, lip licking, drooling, or vomiting?
Are his gums nice and pink (not white/pale)? Moist or sticky?
If you press on his belly, does he have any tensing, tenderness, discomfort, or pain?
Could he have eaten anything he should not have (ie bones, toys, plants, chemicals, human meds, etc)?