It only takes 100 grams of onion (about the size of a medium onion) per 20 kilograms of a dog's weight to cause toxic effects, which means that a 45-pound dog would only have to eat one medium-to-large-size onion to experience dangerous toxicity levels.
How long after eating onion will a dog get sick? Usually, symptoms will appear within 1 to 3 days of the onion being eaten. It often starts as a tummy upset, with vomiting, diarrhea, tummy pain, lethargy, and loss of appetite. This is then followed by the effects of the red blood cells being damaged and dying.
Toxicity. Consumption of as little as 5 g/kg of onions in cats or 15 to 30 g/kg in dogs has resulted in clinically important hematologic changes (Cope, 2005). Onion toxicosis is consistently noted in animals that ingest more than 0.5% of their b.
The toxic dose is typically 15-30 grams per kilogram of the dog's weight, or about . 5% of the body weight.
If your dog gets into the onions one day and chows down, it only takes . 05% of their body weight in onions to be a toxic amount. For a 45 pound dog, that's one small onion.
It typically takes ingestion of about 0.5% of your pet's body weight of onion to be at risk of onion related toxicity. This calculates out to be approximately 0.15 lbs, or around 2 ounces. Unless your pet ate anything close to that amount or more, it is not recommended to do decontamination for him.
A 10-lb dog would ingest a potentially toxic dose by eating only half of an onion. Crushing or chewing Allium spp releases allicin, which quickly breaks down into the toxic component n-propyl disulfide.
Garlic and onions, as well as other plants of the Allium species (leeks, chives) in either fresh, dried, or powdered forms are toxic to both dogs and cats. Garlic is more toxic than onions – with raw garlic, toxic ingestion is around 1 gram per 5 pounds, and with onions it is 1 gram per pound.
The toxic effect of onions depends on how much your dog eats and the size of your dog. According to The American Kennel Club , 100g of onion per 20kg of a dog's weight can lead to toxic effects. This means that only a relatively small amount of onion can be deadly to a small dog.
When there's no time to chop onions, onion powder is one option. Substitute 1 tablespoon of onion powder for one medium chopped onion. For the best onion flavor, use frozen chopped onions or dried minced onion (found in the spice aisle).
Onion powder, on the other hand, comes from onions that have been dried (either air-dried, dehydrated, or freeze-dried) and then crushed to varying degrees, from flakes to powder. No texture, no water, and a more concentrated oniony punch. And just like with fresh onions, the flavor of onion powder varies, too.
Onion powder is basically dried onion that's been ground. Although dried onion is just the onion flesh, onion powder can also include dehydrated onion skins and roots. Onion powder is three times more potent than dried onion, so for 1 cup of fresh onion, you would substitute only 1 tablespoon of onion powder.
The pungent flavor of raw onion always results in some onion tears when you cut them. In contrast, onion powder is not as pungent as fresh onions are due to the dehydration process.
Onion powder is made from dehydrated, then finely ground onions. The powder can be sprinkled on meats before cooking or incorporated into sauces, soups, or dips.