the mince we get from our butcher is a combination of tripe, lamb, chicken, offal, etc. I know that natures menu frozen mince from PAH contains tripe along with vegtables and chicken, lamb, or beef, etc. Snoopy loves tripe, but rocky isn't so keen on it so I only feed pure tripe once a week to Snoopy. If you order your Omega 3,6,9 from Hoilland and Barratt online they did have last week a special on, so check there before you buy locally.