I bought Horace a kong yesterday, filled it with peanut butter and gave it to him. He loved it and it kept him busy for 30mins or so but then he seemed to give up as he couldn't get the rest out. He seemed to try to lick it out rather than also chewing on it but I'm wondering if he gave up as it's new to him and he hasn't yet worked out how it works? Do dogs sometimes take a while to get used to kongs or does Horace simply have little patience?!