Our 9 month old cat has just been very sick on the rug. Having looked through the vomit (pleasant job) it was full of raisins. I don't know where he got the raisins from as it definitely wasn't at home, but he is allowed out during the day and is kept in at night. He is now curled up asleep and seems quite happy but having googled I have read that raisins can be toxic to cats. Do you think I need to worry, or are there any signs I should be looking out for in him? Thank you for any advice.