Mackerel has become Stella’s new favorite treat! In my package, I got some of the mackerel body (fillet) and a tail. I was kinda of worried about giving her the tail because I didn’t want her to choke on it but it looks like she thoroughly chewed it before she swallowed. I’d still probably watch her eat it again next time incase she chokes. Like the salmon bites & fillet, the mackerel is a bit oily and leaves a fishy reside on your fingers. Don’t forget to store this in the fridge so it doesn’t spoil! I’d definitely buy these treats again; they were fantastic! We have yet to try the mackerel heads so I’ll either update my review or post another one.