Long lasting chew
My cyprus poodle loves these, mainly I think because of the challenge of eating them! The shape and the tuffness of the chew means she has to have a little tussle with it, and this encourages her all the more.
I'm especially pleased with her interest in these because she's not really a great chewer, and won't touch hide chews at all, but she loves pig's ears, and they usually take her about 15 minutes to nibble through, whereas the gullet lasts her a good 40 minutes of constant chewing.
Another bonus is that they don't smell, so they're good for rainy days when she can eat them inside.