The mechanism is the same wherever it comes from; what varies is how much a dog can drink or eat in one go.
1. Cold drinks deliver the largest realistic doses
A hot mug is rarely finished by a dog, but a tall glass of sweet iced tea or a spilled cola can be, and sweetening removes the bitterness that would otherwise put a dog off. Those two drinks have their own pages for that reason. Iced tea: caffeine, drunk cold and in volume →
2. What dogs can drink instead
Water is the answer for a healthy dog, and most other drinks are unnecessary rather than poisonous. The one exception that outranks caffeine is xylitol in sugar-free drinks, which is dangerous at any amount. What can dogs drink besides water? →
FAQ
How much Caffeine is dangerous?
A lap of brewed coffee is usually minor; grounds, beans, tea bags or caffeine pills are dangerous.
Can I treat this at home?
A small lick of a milky coffee from a large dog: watch only.
When should I call the vet?
Grounds, beans, pills, or any hyperactivity/racing heart.
Compiled from veterinary poison-control and medical reference sources, including the ASPCA Animal Poison Control Center, the Pet Poison Helpline, and the Merck Veterinary Manual. This is general educational information, not a diagnosis or a substitute for examination by your veterinarian. DogSafe's severity ratings are our own assessment, calculated from published guidance and your dog's weight. In an emergency, call ASPCA Animal Poison Control at 888-426-4435 or the Pet Poison Helpline at 855-764-7661.