NOTE: These recipes contain NO additives or preservatives and so they will not keep as long as commercially prepared treats. Most do keep well for at least 10-14 days in a container or cookie jar. Biscuits made with milk and cheese should be kept refrigerated or frozen. If you choose to make larger batches, consider freezing a portion and just thaw a few at a time. To make easier clean-ups, I like to line my cookie sheets with foil and/or lightly spray with non-stick cooking spray. If you want to add even more taste to your Pet treats, use garlic flavoured cooking spray. Most of these are recipe variations developed in our own kitchen. Credit is given where recipes are from other sources.