My 9 month old lab Tiko has had really bad gas for the last 2 weeks. When I say bad I mean really disgusting. We can here him letting them rip. We find it amusing but we also no it needs to stop. We have figured out it has to with the peanut butter we put in his kong. Can you suggest something other than peanut butter that we can spread in his kong to keep him busy. We use cheese but find he can lick it up within minutes. We also use his toothpaste but once in a while but don't want to use it all the time. TIA