Technically it’s poisonous to dogs, yeah. It’s a mild poison, but like chocolate (and grapes and raisins), they shouldn’t have it.
Leeks are part of the Allium family (which also includes onion, chives, and garlic) and are poisonous to dogs and cats. Garlic is considered to be about 5-times as potent as onion and leeks. Certain breeds and species are more sensitive, including cats and Japanese breeds of dogs (e.g., Akita, Shiba Inu).
Grapes and raisins are a different class. Alliums and chocolate are bad, sure, but if your dog has a bad reaction to grapes and really raisins, it can be 2-3 raisins cause kidney failure. They’re not quite sure about the mechanism, only that it doesn’t take much and isn’t an always thing.
Technically it’s poisonous to dogs, yeah. It’s a mild poison, but like chocolate (and grapes and raisins), they shouldn’t have it.
https://www.petpoisonhelpline.com/poison/leeks/
Grapes and raisins are a different class. Alliums and chocolate are bad, sure, but if your dog has a bad reaction to grapes and really raisins, it can be 2-3 raisins cause kidney failure. They’re not quite sure about the mechanism, only that it doesn’t take much and isn’t an always thing.
Oh yes, they’re not a “mild” on the poison scale compared to like, grass onion and such.
Very true.