Thanks for that. There are a number of things that could be going on here with Buddy this evening to cause this lethargy and inappetance, and we need to consider anything from an early gastroenteritis, to a toxicity (hopefully there isn't anything that he could have gotten into), to intestinal worms or even a foreign body obstruction. Given Buddy's age, we even really have to consider an internal organ or endocrine issue here as well. Whatever the case, you will definitely need to continue to keep a close eye on Buddy, and if this lethary continues, then you will need to get him seen by your local ER or after hours vet tonight.
For now, make sure he has plenty of fresh water available and encourage him to drink. The biggest concern right now is that he could become dehydrated. In case he is nauseous (hence why he may be off food), you can with hold his food until the morning now, and from then you can start him on a bland diet of cooked, boneless, skinless chicken breast and boiled white rice. Don't worry about getting him to eat tonight, but definitely encourage him to drink now and over night. If he isn't interested in drinking, then you could try making him up a fresh chicken broth. For this, just boil up some fresh chicken until cooked, scoop off the solids, allow the liquid to cool, then feed him this luke-warm broth.
Over the next few hours, please keep a close eye on his mucus membranes, capillary refill time and respiratory rate as follows:
Mucus membranes - flip his lip and look at the color of his gums. They should maintain a nice salmon pink color. Get him to the emergency Vet if they appear white or very pale pink, or if they are a dark deep red color.
Capillary Refill time - this measures blood perfusion and test this by putting your thumb on his gum to apply pressure. After you release your thumb you will see the gum blanch. Capillary refill time is the amount of time it takes (in seconds) for the gum to return to a healthy pink color from the blanched white color. If 2 seconds or less don't worry - if it is taking significantly more time, again - off to the emergency Vet.
Respiratory Rate - if he is continuously panting throughout the night, this is a sign of shock and or pain and a signal for a trip to the emergency Vet.
Best of luck with Buddy and hopefully these symptoms settle in the next few hours. As above, if he can't keep water down, seems very lethargic, or if any of the parameters above don't seem right, then definitely play it safe and get him seen tonight. I hope all of the above makes sense? If you have more questions or if I can help in any other way, please do not hesitate to ask! If you would like to accept my answer, please press RATE OUR CONVERSATION (I am not compensated in any other way). Bonuses are always welcome. Thanks! I hope to work with you again soon!
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