Artículos clínicos

Intestinal worms in dogs and cats

07/08/2020
Worms are common parasites in pets and if left untreated may cause severe illness or even death. Some life stages of certain intestinal worms in animals can also infect humans. Regular treatment for worms and good personal and environmental hygiene measures should be taken to ensure that families and pets can live together as safely as possible.

Hookworm

hookworm

Hookworm infection can be fatal. Hookworm can infect dogs and cats of all ages but are most commonly found in puppies.

Hookworm larvae are found in the soil and are ingested or can penetrate the dog’s skin through the feet and legs. Puppies can become infected by suckling their mother’s milk or through the placenta before they are born. The hookworm attaches itself to the intestine and sucks blood.

The main danger with hookworm is the potential for anaemia and diarrhoea. Signs of hookworm infection in dogs and cats include weight loss, poor appetite, a ‘big belly’, black, tarry faeces, diarrhoea, depression and lethargy.

 

 

Roundworm

Roundworm is also potentially fatal. Roundworms affect dogs and cats of all ages, however puppies and kittens are the most susceptible to infection and disease. The eggs of these worms can be ingested from the environment or larval stages can be passed through the placenta or mother’s milk to the puppy or kitten.

Although roundworm does not suck blood, they do attach to the lining of the animal’s intestine and feed on the digested food in the intestine. If left untreated, roundworm can obstruct the flow of food through the intestine. This can lead to a blockage of the intestine and this may be fatal.

Signs of roundworm infection in dogs and cats may include a dull coat, coughing, lack of growth, diarrhoea, vomiting, poor appetite, lethargy, weight loss and a ‘big belly’. In extreme cases, the worms can block the intestine and this may lead to rupture of the intestine and leakage of the intestinal contents into the abdomen (peritonitis). This is a very serious complication and can be fatal.

 

Whipworm

whipworm

Whipworm parasitic life stages can only be ingested and cannot be passed on to puppies or kittens through their mother’s milk. Whipworm live in the large intestine, mainly in the caecum.

These worms attach to the wall of the intestine and cause irritation and inflammation. Signs of whipworm infection in dogs and cats may include intermittent diarrhoea, often with mucus and fresh blood, dehydration and debilitation. In severe infections anaemia may also develop. In extreme cases, death may occur.

 

 

 

Tapeworm

tapewormTapeworm are usually the least dangerous of the intestinal worms for dogs and cats. The ‘flea tapeworm’ is the most common tapeworm infecting dogs and cats in Australia. It is usually contracted when dogs or cats eat a flea (whilst grooming) infected with the tapeworm larvae.

 

A different type of tapeworm, the ‘hydatid tapeworm’ infects dogs when they eat hydatid cysts present in the offal of infected species such as sheep. Hydatid tapeworms pose a serious threat to human health in certain areas. Read more information on how tapeworm is transmitted and the signs to look for to determine whether your dog has tapeworm.

 

Worm prevention tips

prevent worms in your dogFollow these simple tips to ensure your pet and home are protected against worm infestation

  • Ensure that your dog and cat’s bedding and sleeping areas are always clean (including the dog kennel)
  • Remove faeces from your yard or garden.
  • Ensure that fleas are controlled adequately on both cats and dogs.
  • Never feed your pet raw meat or offal. Feed your dog only cooked meat or commercial food.
  • Always wash your hands after playing with your pet and prevent pets from licking your face.
  • Control intermediate hosts such as rats and mice.
  • Worm your pet regularly