I bought this for my tortoise Koopa and he bit it ounce. It's just another fail cuttle bone. My tortoise doesn't like cuttle bone either. He bit it the first time because it was fresh and he was curious, but over time, the block lost the aroma. He NEVER pays attention to it at all. It's just a more expensive cuttle bone. I got this because he didn't like cuttle bone so I would see if he liked this. Some other tortoises love this, but mine doesn't like this. It's just my tortoises preference.