Take him to the vet or else he/she will die.
Onions are not seriously harmful to dogs, though it may cause vomiting. You may want to consider a multivitamin, as abnormal eating behaviors are often indicative of a nutritional deficiency.
Nothing happens. Too many they could get fat. They can't eat onions, chocolate, or olives.
Yes, dogs can eat black beans. They must be well cooked and should not contain salt, onions, or garlic.
onions might not kill it but it is not good for any dog. depending on how much it eats really matters. if it only had a small piece that should be OK but its not good for them to eat onions. If it had 1/6 of an onion or more it can be dangerous. if it had more than 1/3 of the onion the dog might throw up and you might have to take it to the vets.
16.5
My pet donkey eats onions everyday!!Onions are great for people and donkeys!!Onions are a good source of fiber and a great and complete part of a donkey's breakfast!!
If it's a whole onion, then probably because onions can cause Heinz body anemia. The smaller the dog, the more toxic the onion will be.
Netherlands.
no
Take it to the vet ASAP Dogs cant eatChocolateGrapesGarlicOnionsSo make sure you're dogs stays away from those.-Extreamea friends of Gamesguide
if a dog eats mice poison you should see a vet about it
A homo sapiens is a mammal that eats: carrots, onions, lettuce, parsely, and beets.
It depends on how much the big dog eats and the small dog eats then you can measure them