According to a study published in the Journal of Veterinary Internal Medicine, the prevalence of obesity in dogs is between 22 and 40 percent. Obesity can be a sign of other serious ailments which are characterized by weight gain, appetite increase and lethargy in primarily older dogs.

Owner’s negligence or lack of knowledge is largely the reason for high mortality rate among dogs, besides the genetic disorders. Obviously, we can’t expect a pet owner to know everything, but it’s important that the owners observe their pet dog’s behavior on regular basis and keeps a good physical check.

  

All animals have exceptional tolerance for pain when compared to human. This is because in wild animals can not show pain, especially in a dominant position in pack, since signs of pain generally indicates weakness in dominant animal and provide an opportunity to other members to take over the pack.

Dogs can’t talk and their behavior is the first sign of illness. A pet owner must take the pet for routine checkups to its veterinarian as some signs are only possible for veterinarian to diagnose in early stage. You can help your vet in diagnosis by keeping a record of exactly when you notice the signs of illness.

Following are some of the signs of illness in dogs that shall be taken as a warning bell and an indication to visit a vet for check up.
 

Symptoms of ill health
(See your Vet ASAP)
Signs of Emergency
(Call and visit your Vet right away)
Inflammation in anal region Pot-bellied appearance (Sudden inflation in stomach)
Lumpy growth in anal region Blood in the urine
Dried feces Unusual Genital discharge
Excessive licking or scratching on any part Partial or complete paralysis
Blackness in anal region Fits, convulsion or seizures
Dragging the back on floor Difficulty in breathing
Persistent scratching on any part Coughing, gagging
Impulsive Chewing or licking on any part Persistent sneezing
Redness or inflammation on any part Fainting
Dryness, flakiness or flea dust on any part Non productive coughing
Unusual odor from any part Lethargy or abdominal discomfort
Increased hair loss Persistent, bloody or explosive diarrhea
Excessive discharge from eyes Projectile, Bloody or painful vomiting
Excessive Redness in eyes Cross Hind leg steps while walk
Squinting (To look or glance sideways) Loss of Balance
Blue-Grey cloudiness in eyes Difficulty in hearing
Excessive redness or red spots on any part of body Failing vision
Unusual odor or excessive discharge from ear canal Fever
Excessive head shaking or excessive ear scratching Excessive dribbling saliva
Swelling of the ear flap Difficulties at birth
Reluctance to eat  
Bad breath  
Excessive dribbling saliva  
Inflamed gums  
Loose or broken teeth  
Difficulty in running, walking or getting up  
Unusual running style  
Excessive weight gain  
Dandruff, hair loss or visible parasites  
Reluctance to exercise  
Reduced stamina  
Lameness & limping  
Swelling in any part  
Tenderness in limbs  
Nasal discharge  
Excessive snoring  
Straining to pass urine  
Increased urination  
Increased Thirst  
Visible worms in the feces  
Weight gains on rear  
Change in color, frequency or quantity of droppings.  
Irregularity in routine  
Sudden loss of weight  
Incontinence (inability to control urination)  
Failure to conceive  
Swelling in the mammary glands  
Sudden Behavioral changes  
Staggering walk (Stiff walk)  
Constipation  
Non- symmetry of legs  
Limping walk