 [ Symptoms ] what can i do if my dogs fever is too high will benedryl help lower a fever  my dog has all 5 signs of having a fever since it is evening time i can not take him to his normal vet is there any home remedy i can use to help lower his fever would benedryl be helpful to bring a fever down in a small 8 pound dog [ Disease ] he may be having an allergic reaction from the vinegar bath vinegar baths are not a common treatment for sunburn so i would suggest that you treat the sunburn in a more appropriate way