Hello & welcome, I am Dr. B, a licensed veterinarian and I would like to help you with your wee one today.
Is it brown like his dog food? Or like coffee grounds?
Is he able to keep any water down at all?
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
, stones, socks, toys, plants, chemicals, human meds, etc)?