Why exactly are raisins toxic for dogs and not humans?

3volver@lemmy.world to No Stupid Questions@lemmy.world – 102 points –
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Only anecdotal but I grew up on a vineyard and my dogs ate grapes, raisins, sultanas all day and all have lived 11-14yo (GSP breed)

Most dogs are fine actually. A small seemingly random percentage go into kidney failure so it's easier and more humane to just not take a chance.

In a similar vein as your dogs but in Asian countries the dogs also eat/get fed leftovers which include plenty of spices, which are also stated online as problematic for dogs.

Recent research indicates it might be differences in the grapes, not differences in the dogs. Different breeds of grapes have different levels of certain chemicals that are toxic to dogs.

Yep. We grew grapes too, multiple varieties. Dogs ate them and had zero ill effects. One of them even stole one of those 1 lb chocolate bars and ate it, the worst effect was a little diarrhea.

Some of these things are way overblown on the internet. OMG your St Bernard ate a grape?!? I’m sure a lot of it has to do with dog weight vs quantity consumed, so a bunch of chocolate for a Chihuahua is a different story vs a German Shepherd. I’m not suggesting it’s OK for dogs to eat these things, just exercise some judgement and call a vet, but the internet freakout is unreasonable.