My male 8 year old Lab has been off his food for a few days and vomiting, I took him to the vets this morning and just had a call, his liver count is 1000, she asked if he had had any grapes or any chance of him been near poison or antifreeze, the only thing I can think of is the flooded field water he likes to paddle in and drink, could anything they spray on fields do this? They are flushing him through and going to monitor over the next 24 hours but did say it didn't look promising.