Will buy a cows ear tomorrow to see what he makes of it.
How long do you think it'll keep him amused for? How long does it take to eat it?
Coco loves pigs ears but they are quite fatty so I don't give them often, can also buy pigs ear strips which are smaller bits of pigs ears so she sometimes has those. Otherwise beef pizzles and tripe sticks are really good but they are both quite pongy - Coco has these most often and she loves them!
You can also get dried liver - I go for the natural treats without any of that funny stuff they use to fill bones, hooves etc. As for how long they will keep him busy - probably quite a while at first - pizzles used to keep Coco quiet for ages but now she can finish one in about 15 minutes
Never leave him unsupervised with these treats though
Coco also loves a whole carrot to chew on and lately she has developed a taste for raw sprouts