Kunekune sluggish

I have a hog that is sleeping a great deal, drinking  a good deal of water,  and eating very little.  He is still getting around, but is clear something is not normal. Any ideas.

Vet says it has the flu.

I have raised pigs before. This is the first time I have had a sick one. To quote the vet, "Giving a shot to a pig is like giving a shot to a 300 pound unruly child."  He was right.

With any "off" animal, for me stool would be the first thing to investigate - parasites are so common in domestic and wild animals as they poop, eat and roam in a relatively closed circuit.

Stool can tell you/the vet a lot, based on color, consistency, and odor. Again, knowing what "normal" is in advance is super helpful.

Second go to is temperature and hydration.

If you have a digital temp gun, this is an ideal place to use it! Shoot the laser down the ear canal (ideally do this on a healthy animal so you have a base line). Or there is the old fashioned "up the keister" version - worth investing $10 in a digital one that reads in just 10 seconds! Elevated likely means infection, low can mean lots of NOT good stuff.

Dehydration is best noted by touching the mucous membranes (should be slimy and slippery) if sticky or tacky, NOT good. Skin tenting works in pelted animals (dogs, cats etc.): grab a good pinch of fur/skin and pull up from between shoulder blades. A hydrated animal will "snap right back"; depending on severity of dehydration it will slowly return or if severe may stay "up" in a ridge or wrinkle.

Hope this helps with future issues.