One tiny mosquito can have a big impact on your dog’s wellbeing. One bite from a mosquito can give your dog heartworm disease. Heartworm disease can be a serious threat to dogs; it can lead to lung disease, heart failure, and damage to other organs in the body. It can involve hospitalization with painful injections, which can be traumatic. Prevention is still the best treatment. Heartworm medication does not stop the infection from happening and does not kill adult heartworms. It will kill larval heartworms that have infected your dog before they become adult heartworms. Heartworm disease is transmitted to your dog by infected mosquitoes, who got infected by feeding on an infected animal. Signs of heartworm disease are lack of appetite, weight loss, coughing, reluctance to exercise, and fatigue. Sentinel is a prescription tablet that prevents heartworm disease and flea populations in dogs and puppies. Sentinel for dogs works by preventing heartworm larvae from developing and killing adult roundworms, hookworms, whipworms, and tapeworms (Sentinel Spectrum). It also contains an insect growth regulator, which breaks the flea life cycle by preventing the normal development of fleas from eggs to adults: this will help protect your pet and home from infestations. Sentinel is available on Vetito veterinary pharmacy in four sizes in beef-flavored chewable tablets or regular tablets.