It is extremely dangerous to give a small dog any medication intended for a large dog.
Here's why:
* Dosage: Heartguard is a medication that requires precise dosing based on the dog's weight. A small dog receiving a dose meant for a large dog could experience serious side effects, even potentially fatal ones.
* Active Ingredients: The concentration of active ingredients in the medication is designed for a larger dog's body weight. A small dog's system wouldn't be able to metabolize the medicine properly.
* Palatability: Even if the chewable is halved or divided, it's not guaranteed that a small dog will find it palatable, and it could potentially choke trying to swallow it.
What you should do:
1. Contact your veterinarian: The safest course of action is to talk to your veterinarian about the appropriate Heartguard dosage for your small dog. They can prescribe the right size and strength of medication for your pet's individual needs.
2. Never give human medication to your dog: Even over-the-counter medications can be dangerous for dogs. Always consult your veterinarian before giving your dog any medication.
Remember, your dog's health is paramount. Always consult a qualified professional for any medical questions.