This is a great product. I think it is better than giving the Omega 3 capsules. They only need this. :-)

http://www.amazon.com/Missing-Link-Ultimate-Skin-Coat/dp/B002TAOYK6/ref=sr_1_2?ie=UTF8&qid=1370135159&sr=8-2&keywords=missing+link

• Highly-palatable dietary supplement to pets food for better health and longer life
• All formulations provide enzymes, beneficial bacteria, essential fatty acids, dietary fiber, mucilage, naturally occurring vitamins, major and trace materials and phytochemicals
• Made from nutrient-rich, human-quality whole foods and food concentrates
  
  
  This is a good one too!

http://www.amazon.com/Missing-Link-Ultimate-Hip-Joint/dp/B000SSN04M/ref=sr_1_1?ie=UTF8&qid=1370135159&sr=8-1&keywords=missing+link 

• Healthy joints and flexibility
• Healthy skin and coat
• Healthy digestive system
• Sustained energy levels