What vomiting within 30 minutes tells you
When vomiting starts this quickly after eating guacamole, it's usually the onion and garlic irritating the stomach lining, not the avocado itself. Your 7 kg dog's system is reacting strongly to the allium toxins, trying to expel them before they're absorbed.
The vomit's appearance matters — if you see foam, a reddish tint, or what looks like coffee grounds, these suggest stomach irritation is significant. Save a sample if you can, as your vet may want to see it.
Why two tablespoons is a concerning dose
For a 7 kg dog, two tablespoons of store-bought guacamole likely contains enough onion and garlic to be toxic. Commercial brands tend to use more of these ingredients than homemade versions, concentrating the risk in small amounts.
Even if some came back up in vomit, enough may have been absorbed to start affecting red blood cells. The vomiting is an urgent sign that your dog's system is struggling with the toxins.
The next six hours are critical
If vomiting continues beyond two or three episodes, or if your dog can't keep water down, this becomes an emergency. Dehydration sets in quickly for small dogs, and persistent vomiting prevents them from getting any nutrients.
Watch for signs of weakness or collapse — these suggest the toxins are affecting circulation. Check the gums every hour; if they become pale or develop a yellowish tinge, don't wait for other symptoms to appear.
Why store-bought differs from homemade
Store-bought guacamole often contains preservatives like onion or garlic powder, which are more concentrated than fresh ingredients. These powders deliver a bigger dose of toxins in a small volume — what seems like just two tablespoons could contain the equivalent of a whole onion's worth of danger for a 7 kg dog.
Many commercial brands also add extra spices or flavor enhancers that can further irritate your dog's digestive system. The vomiting may be compounded by these additional ingredients, not just the onion and garlic.
The full verdict, portion guidance and serving notes are collected on the Guacamole food facts page.