Fox Valley Day-One Formula 32/40 for Baby Squirrels, Opossums, and Eastern Cottontails

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  • Fox Valley Day-One Formula 32/40 for Baby Squirrels, Opossums, and Eastern Cottontails
  • Fox Valley Day-One Formula 32/40 for Baby Squirrels, Opossums, and Eastern Cottontails
  • Fox Valley Day-One Formula 32/40 for Baby Squirrels, Opossums, and Eastern Cottontails
  • Fox Valley Day-One Formula 32/40 for Baby Squirrels, Opossums, and Eastern Cottontails
R256.90 - R1,767.00


The best formula for Eastern cottontails, possums and baby squirrels from 2 weeks to 4 weeks of age*. Fox Valley Formula 32/40 is a rehabber-approved powdered milk formula that produces better weight gain, fewer digestive problems, and better acceptance than other formulas. 

Fox Valley Formula 32/40 mixes easily, smells wonderful, and there is no need to supplement the formula with any added cream, yogurt, or probiotics.

*For feeding babies under 2 weeks old, see the Baby Squirrel Care Guide.

Fox Valley Formulas

Henry’s is proud to partner with Fox Valley Animal Nutrition, a leading manufacturer of formula milk for endangered and orphaned animals. Fox Valley uses only high-quality human-grade ingredients to create milk replacers that closely match the specific composition of the mother’s milk in order to assure proper nutrition and growth.

Mixing and Storage Guidelines: Mix 1 part powder to 2 parts warm water and feed 4 to 6 times a day. To determine the correct amount, see guidelines below or visit the Baby Squirrel Care Guide

  • Add powder to warm water (approx. 100°F). 
  • Blend until powder is dispersed in water. 
  • Feed soon after mixing.  
  • Mixing directions are based on volume, not weight, measurements.
  • Store any leftover formula in the refrigerator and feed within 24 hours. 

Unused formula powder should be stored in a cool dry place, preferably the refrigerator, and is good until the expiration date printed on the back of the bag.

For Squirrels: 
Not recommended for squirrels younger than 2 weeks.

Follow the 7% Feeding Rule: Weigh the baby on a scale in grams; multiply that number by 7% (0.07) to determine the number of mL’s to feed per feeding. You may need to start with smaller feedings at first and work up to 7% after a few feedings, especially for emaciated babies. At 5 weeks of age, gradually switch to Fox Valley Formula 20/50.

For Eastern Cottontails:
Feed 1-1 1/2 teaspoons per one ounce bodyweight daily, divided into 2 to 4 feedings.
For Opossums:
Feed 1 1/2-2 teaspoons per ounce bodyweight daily, divided into 6 to 8 feedings. At about 45 grams body weight, gradually switch to Fox Valley Formula 25/30.

Made in the USA.








548 kcal per 100 grams of powder. 1 cup weighs approx 120 grams.

Guaranteed Analysis:

Crude Protein

Min. 32%

Crude Fat

Min. 40%

Crude Fiber

Max. 0%


Max. 9%


Max. 5%

Ingredients: Vegetable Oils, Dried Milk Protein, Dried Hydrolyzed Casein, Dried Skimmed Milk, Dried Corn Syrup Solids, Dicalcium Phosphate, Calcium Carbonate, Potassium Chloride, Magnesium Sulfate, D,L,Methionine, L-Arginine Sodium Chloride, Choline Chloride, Vitamin E Supplement, Vitamin A Supplement, Vitamin D-3 Supplement, Zinc Sulfate, Ferrous Sulfate, Riboflavin Supplement, Manganese Sulfate, Copper Sulfate, Vitamin B-12 Supplement, Thiamine Hydrochloride, Pyridoxine Hydrochloride, Folic Acid, Glycine, L-Lysine, L-Threonine, Taurine,L-Tyrosine, Calcium Iodate, Biotin.

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65 Reviews

  • 5
    SQ milk

    Posted by CP on 20th Oct 2023

    Needed to replace formula for baby squirrel. This works well. Easy to mix and he took to it quickly.

  • 5
    Great product

    Posted by Deborah on 19th Oct 2023

    Baby squirrels loved it

  • 5
    Fox valley products

    Posted by Brenda on 9th Dec 2022

    I got excellent results with this product. No problems with palatability and it digested well. Well worth what the cost was. I have 2 baby squirrels doing well.

  • 5
    This is the best product to give your wildlife

    Posted by Deborah West on 21st Sep 2022

    Couldn’t ask for better products.

  • 5
    Henry’s 32/40

    Posted by Sylvia Wilkinson on 4th Jul 2022

    I am feeding a just born cottontail bunny. Things are going well. It is growing at the proper rate.

  • 5
    Orphaned Squirrel Thriving

    Posted by Jodie on 16th Jun 2022

    No issues with this formula, no bloating or digestive issues, gaining weight and developing as expected. Just a healthy, bright little one who devours this replacer.

  • 5
    Smells great. Mixes easy, no lumps. My furbabies say it tastes delicious plain and mixed with baby fruits.

    Posted by Denise ODonnell on 13th May 2022

    Henry's is an ease to order from. They ship out your product quickly. Customer service is also great and are there to help. Comments on the order forms do not go unnoticed. Thank you Henry's

  • 5
    Fox Valley formula

    Posted by Jship on 12th Apr 2022

    Great product! Fast shipping.

  • 5
    Fox Valley Day One

    Posted by Michele on 4th Apr 2022

    I bought this as a donation to a local wildlife refuge. This brand and product was specifically requested, they use it exclusively for many of their rescued baby critters. In their thank you email they said this is by far the best brand / formulation and their vet recommends it highly.

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