My Dog May Have Eaten Rat Poison, How Long Before Symptoms Start To Occur?

He is only 3, and we put the rat poison where we though was out of his reach, but clearly it wasn't. He's a Labrador, pretty big, and nobody saw him eat it but we know he likes to eat everything and when we went outside to do some gardening there was paper from the box and heaps of pellets everywhere. We... show more He is only 3, and we put the rat poison where we though was out of his reach, but clearly it wasn't. He's a Labrador, pretty big, and nobody saw him eat it but we know he likes to eat everything and when we went outside to do some gardening there was paper from the box and heaps of pellets everywhere. We cleaned everything up but he may have ingested 2 or 3. We don't know. How long before symptoms start to occur, and what are they?
Update: The poison was little green pellets for killing rats and mice. Everyone's really worried.
8 answers 8