Can dogs get cancer from weed killer?

I know chemicals such as the ones in weed killer can have detrimental affects, but if a dog is outside and is playing and rolling around, eating grass (yeah my dog does that sometimes) can the dog get cancer from it? Last year we had a neighbor who DRENCHED her yard in weed killer and shortly after her dog died... show more I know chemicals such as the ones in weed killer can have detrimental affects, but if a dog is outside and is playing and rolling around, eating grass (yeah my dog does that sometimes) can the dog get cancer from it? Last year we had a neighbor who DRENCHED her yard in weed killer and shortly after her dog died from cancer. Several months later my dog died from cancer. Now that I think about it he was allergic to grass and would always lick his paws because they itched. I was wondering do you think the weed killer could have given my dog cancer?
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