Daily Check List
Temperature: Changes in body temperature can make a dog ill. Check the body temperature of your Chihuahua; it should remain between 101 and 102 degrees Fahrenheit (38.3 to 38.8 Celsius). Any abnormal changes in your Chihuahua can be a sign of illness and you should take your dog to the veterinary doctor right away.
Eyes: The eyes can show you a lot and let you know that something is amiss. A slight, watery discharge is normal. However, if your dog has a very thick discharge, this is usually a sign of illness and should be taken care of by a veterinarian as soon as possible. If your Chihuahua has an unusual reddish color in his/her eyes that is also a sign of illness. When a dog ages it develops a cloudiness of its lens, which unfortunately can lead to blindness, but can be avoided with proper care and treatment to any early stage problems.
Mammary tissue (females): Check for swelling and report this to a vet
Testicles (males): Check for swelling and report this to a vet
Nose: Check for abnormal discharge from the nose. An older Chihuahua can develop crust and/or cracks on its nose and you should seek treatment for this. It is normal for the color of a dog's nose to change over a period of time.
Ears: Odor coming from your pet Chihuahua ears is a major sign of sickness.
Breathing: Bad breath from a dog can be a sign of looming illness and you should have it checked out by your vet. Normal breathing is very important; this assures you that your pet is in normal condition. Abnormal breathing is a sign of illness. Breathing problems become more regular as dogs age, so check for unnecessary panting or wheezing.