I have a 4 year old male flyer. I’ve had him since he was just a baby. He was a rescue. The past couple days he’s been really lethargic seeming at times.. last night he did get up and around a little bit but he threw up the night before last and he just doesn’t seem to be feeling well.. he is usually running around and doesn’t sit still for long and last night he would run around a little bit then he would stop and sit on me for a few minutes which was not normal. He was also letting me pet him a lot more than usual. He’s just not acting like his normal self. He eats HHB everyday along with fruit and veggies and mealworms and nuts for treats. So I feel like his diet is fine. Our dog had fleas recently but we gave her a good flea pill so her fleas are gone but I noticed Pancake scratching a little earlier so now I’m wondering if he maybe has fleas now.. his fur is so thick its almost impossible to see any fleas if he does have them.. what are the flea anemia or whatever it’s called symptoms?! He’s also been licking my husband a lot the last couple days so I’m not sure if that’s a salt deficiency and that’s why he’s doing that or not.. please give me your opinions!