Side Effects of Tick Collars for Dogs

Many pet owners turn to flea and tick collars to protect their dogs from pest infestations. While these collars may be effective in preventing fleas and ticks, they also contain pesticides that can be harmful to pets. Before using a tick collar or other product on your dog, check the label for ingredients, such as propoxur, that are known to cause problems. For the safest treatment options, consult a veterinarian.

  1. Gastroinestinal Disturbances

    • Tick collar toxicity can lead to gastrointestinal disturbances. Watch for unusual vomiting, diarrhea or abdominal pain in your dog if it wears a tick collar. These signs may indicate a problem, such as amitraz toxicosis. Amitraz is a common pesticide used for tick collars. A dog that has ingested part of his tick collar may also display gastrointestinal upset.

    Behavioral Changes

    • Watch your dog for unusual changes in behavior. PetMD suggests that symptoms of toxicity from tick collars may occur between two to six hours after exposure. A dog that seems disoriented, unusually lethargic or depressed may be experiencing side effects. Remove the tick collar and consult your veterinarian.

    Miscellaneous Side Effects

    • Other side effects related to tick collar toxicity include weakness, staggering and hypothermia, according to PetMD. Without proper treatment, a dog may lapse into a coma or die. The Natural Resources Defense Council warns that pesticides--such as propoxur, tetrachlorvinphos and carbaryls--pose a cancer risk to pets and their owners.