This packet contains four science learning activities on the subject of animal science that can be used in agricultural education courses. The activities cover these topics: (1) identifying internal parasites in domestic livestock; (2) the effect of feed preparation on feed palatability and consumption; (3) determining the absorption abilities of agricultural bedding materials; and (4) comparing and contrasting plant and animal cells. The lesson plans for the activities consist of the following elements: agricultural subjects and science principles included in the lesson, agricultural applications, student objectives, activity length, intended group size, vocabulary terms, materials required, instructional strategies and procedures (overview and results), key questions, and evaluation. One to three references are given for each activity, and a data record and observation sheet are included. (KC)