your chihuahua is absolutely precious... i have two myself and i never let them have any coffee... this is what i found online: "Caffeine in large enough quantities can be fatal for a dog. And, there is no antidote. Symptoms of caffeine poisoning include restlessness, rapid breathing, heart palpitations, muscle tremors, fits, and bleeding. In addition to tea and coffee - including beans and grounds - caffeine can be found in cocoa, chocolate, colas, and stimulant drinks such as Red Bull. It's also in some cold medicines and pain killers." - they are talking about large enough quantities, but for a 2.5 pound chihuahua even a little coffee could be a lot...

and this is about avocados: "No matter how good you think the guacamole is, you shouldn't give it to your dog. Avocados contain a substance called persin. It’s harmless for humans who aren't allergic. But it’s highly toxic in most animals, including dogs. Just a little can cause your dog to vomit and have diarrhea. And, if you happen to be growing avocados at home, keep your dog away from the plants. Persin is in the leaves, seed, and bark, as well as in the fruit."

you can read about these and other food warnings in here: http://pets.webmd.com/dogs/slideshow...ould-never-eat

irina and minnie and ben.