How much baby aspirin to give a 4 lb yorkie?

For a 4-pound Yorkshire Terrier, the typical dosage of baby aspirin (81 mg) is generally about 5-10 mg per pound of body weight. This means you could give approximately 0.25 to 0.5 of a baby aspirin, but it's crucial to consult a veterinarian before administering any medication to ensure safety and appropriateness for your pet's specific health condition. Always monitor for any adverse reactions after giving medication.