Spent grain: health hazard?

[clogwog]

Mine get thrown onto the vege patch as soon as I've finished lautering. They're dug over and into the soil with a garden fork.
The worms & birds love it. If I didn't dig it in, our dog would feast on it instead, after all, she is a Pug.

[oxford brewer]

The spent grain from my brewdays gets collected by a mate for the 2 horses he has and the hops go to the compost bins at the local school.As I now have a new neighbour who has 3 pitbull type dogs(which are wrecking my fence) and 4 new puppies some of the hops may get diverted

[MartialAnt]

I cant get my head around how hops are meant to be poisonous to dogs. Some will remember my brewday disaster of when my dog was drinking the nearly cooled wort. Also she has on numerous occasions eaten mixed grain & hops that i had dumped into the flower bed. The bitch is still alive & kicking.

[Cheshire-cheese]

I assume it is like real chocolate being toxic to dogs, depending on the quantity consumed and the size of the beast.