Join Jim Connely (McGraw-Hill Education) as he talks about specimen shortage and creative ideas to solve that problem in your laboratory. 
Suggestions: 
1. Consider a specimen change
2. Change in your laboratory strategy to incorporate digital
3. Use different resources like Connect, lab manuals, workbooks, etc. 
4. Check out what others are doing on iTeach, HAPS-L, articles on the McGraw-Hill Education site 

Jim talks about Anatomy & Physiology Revealed (Cat, Cadaver and Fetal Pig Versions): http://www.aprevealed.com

Jim references the Practice Atlas for A&P: https://www.mheducation.com/highered/highered/discipline-detail/anatomy-physiology/practice-atlas-for-anatomy-and-physiology.html

Jim references how Richard Alan Jones solved the cat shortage at his school:

https://www.mheducation.com/highered/highered/discipline-detail/anatomy-physiology/a-reluctant-change-for-the-better.html
As promised, here is a list of specimen suppliers. Let us know if you have any to add!
Specimen suppliers 

1. https://www.wardsci.com/store/product/8869205/preserved-cats
2. https://www.carolina.com/preserved-organisms/preserved-animals-mammals/preserved-cats/10750.ct
3. https://www.fishersci.com/shop/products/cats-bio-fresh-8/p-2367422
4. https://www.enasco.com/c/Education-Supplies/Dissection-Preserved-Specimens

Have a great day!