Until a very recent period, dog worms were thought to be of a spontaneous origin, brought about by the influence of heat upon decaying vegetable matter, and it was and still is freely asserted that puppies are born with dog worms inherited from the mother in some mysterious manner while still in uterus. This has been conclusively proven an error and in the minds of all scientists there is no question about dog worms springing from individual eggs and having a complete life history of their own.
The principal worm species with which dog owners have to contend are round worms and tape worms. The first named commonly infest puppies and consequently are most dreaded by breeders. In shape and size these worms resemble common angle worms, but in color are lighter, being almost white or only a pale pink.
In adult dogs these worms, when full grown, are from three to seven inches long. In puppies they are about half that length, and as thick as common white string. Round worms live in the small intestines, sometimes coiled in such masses as to obstruct the passage, and occasionally they wander into the stomach or are passed by the bowels.
It is easy to understand that when one dog in a kennel is infected with worms, millions of eggs will be passed with the feces. These are scattered all over the floors, bedding, feeding and drinking pans. They get on the dog’s coat, are licked off and swallowed and in numbers of ways gain entrance to the digestive tracts of other dogs, where they soon hatch out and in ten days are fully developed.
This rapid development account for the popular belief that puppies are born with worms, for breeders who have held post-mortems on puppies scarcely ten days old and have found in their stomachs fully developed round worms could account for their presence in no other way. They overlooked the fact that the prospective mother, confined in a kennel infested with worms, would get these eggs attached to her coat, belly and breasts, and the young, as soon as born, would take these eggs into their stomachs with the first mouthfuls of milk. Puppies are indeed born infested with Toxocara canis due to migrating L5 larvae which are encysted in the mother’s muscle tissue, and reactivated in pregnancy.
Dog worms are responsible for so much sickness and so many symptoms that it is practically impossible to mention all of them, but their presence can safely be suspected in all dogs which have not been recently treated for them, as well as in cases where the patient is run down, unthrifty and out of sorts.
Other symptoms are a hot, dry nose, weak, watery eyes, pale lips and gums, foul breath, mean hacking cough and a red, scurfy, pimply or irritated condition of the skin and harsh, dry, staring coat that is constantly being shed.
Wormy dogs sometimes have a depraved appetite and will eat dirt and rubbish. Some days they are ravenously hungry, the next day they will not eat at all; their sleep is disturbed by dreams and intestinal rumbling, the urine is high colored and frequently passed, bowels irregular, stomach easily unsettled, watery mucus is frequently vomited and the mouth is hot, sticky and full of ropy saliva.
Puppies which are full of worms bloat easily and are pot-bellied. After feeding their stomachs distend disproportionately to the amount of food consumed. Their bodies are also subject to scaly eruptions and their bowels to colicky pains; they do not grow as rapidly as healthy puppies should and instead of playing with each other they curl up and sleep hour after hour; they get thinner, weaker and more lifeless from day to day and if they do not waste away or die in fits and convulsions with frothing at the mouth and champing of the jaws, grow up coarse-jointed, rickety and misshapen. Puppies with worms are also liable to paralysis of their rear limbs and on removal of the worms the puppies regain control of the affected parts.
A wormy dog is usually an unhealthy and unhappy dog who leads a miserable life. It could even be deadly, especially so for young puppies. Bring your dog to a veterinarian if you are unsure. Your dog will certainly thank you for that.
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