SERIES: What's Really in Your Dog's Treats: Preservatives

Protect Your Dogs and Cats from Artificial Preservatives

Welcome to our New Series: What's Really in Your Dog's Treats

In our last post, we revealed the real story behind the by-products often found in many of the commercial treats (and food) for your family K9. 

This latest post (below) pulls back the curtain on the common - but not so good - (and even controversial) artificial preservatives found in most commercial treats/foods for your dog (and cat)!


Do Your Dog Treats Contain Artificial Preservatives?Preservatives are added to edible pet food products to prevent or slow down the spoiling which, on the surface, may seem like a positive thing. Unfortunately, these same artificial preservatives also have a darker and potentially dangerous side.

Even worse, they are legally allowed by the very government agencies we trust to protect both us and our pets. However, these agencies explain away the potential danger by focusing on individual servings and deeming the small/trace/minimal amounts of artificial preservatives as “acceptable” or “generally recognized as safe” (or GRAS).

But the reality is your pet is probably eating these edibles day-in-and-day-out. So, what might have been considered "acceptable," is now accumulating at a daily rate in your beloved dog's (pet's) body. Could the long-term, cumulative exposure to questionable and synthetic preservatives really be good for our pets?


Artificial Preservative Name


Why It’s Used in Dog Treats/Foods



  • To preserve the energy source found in fats

Propylene Glycol


  • To preserve fats and oil
  • To preserve the moisture content
  • To prevent bacteria growth



  • To preserve fats


Artificial Preservative Name


Potential Health Issues for Your Dog  (and Cat)


  • Also used as a pesticide and herbicide

  • Originally developed by Monsanto

  • Originally developed as a hardening agent to keep rubber from cracking

  • Both Australia and the European Union have banned its use in dog foods

  • Used directly (must be listed) and indirectly (does not have to be listed) by the manufacturer  


  • Liver cell death
  • Kidney and liver damage
  • Cancer (liver, spleen, stomach, skin)
  • Immune deficiency syndrome
  • Blindness
  • Leukemia





Propylene Glycol



Potential Health Issues for Your Dog  (and Cat)

  • Related to ethylene glycol (anti-freeze)
  • Typically used in soft dog food/treats

  • Banned from cat food because of toxicity, but allowed in dog food (by the FDA)

  • Labeled as a “GRAS” (generally recognized as safe) by the FDA


  • Destroys red blood cells
  • Causes Heinz Animal Anemia (including in cats)
  • Cancerous lesions in the intestines
  • Potential intestinal blockages
  • Seizures have been reported in dogs







Potential Health Issues for Your Dog   (and Cat)

  • BHA is considered more dangerous
  • Used in food, animal feed, cosmetics, rubber and petroleum products

  • Labeled by the World Health Organization and the State of California as “suspicious cancer-causing compounds

  • The Department of Health and Human Services classifies these two preservatives as “reasonably anticipated to be a human carcinogen”

  • Labeled as a “GRAS” (generally recognized as safe) by the FDA

  • BHA “may be harmful by ingestion or inhalation” (Oxford University)


  • Alters the function of the endocrine system
  • Liver damage
  • Kidney damage
  • Behavioral changes
  • Cancers/tumors (in both dogs and cats)













In today’s busy world where we rely upon convenience and pre-made food Chemical or Synthetic Preservatives Pose Dangersproducts, preservatives are a necessary additive to keep food from spoiling during manufacturing, transportation and shelf life at your favorite grocery store. So are they a “necessary evil” or are there safer options?

Health issues come into play when cheaper, synthetic/chemical/artificial preservatives are used (for humans and pets). There are natural preservatives that are much safer. But these raw, natural preservatives (like Vitamin C and Vitamin E) are higher in cost so manufacturers opt for the cheaper alternatives. Despite the heartwarming commercials that seem to indicate concern for your pet as their foremost goal, these companies are really focused on the bottom line.

Remember, your pet is relying upon you to protect him and give him the best quality of life, so follow the 3 steps below to protect them!

Give Your Dog The Best Life!


  • Read all labels thoroughly and carefully. Unsavory details are often 3 Steps to Protect Our Petsburied in the fine print. 
  • Use products containing limitedhuman-grade ingredients you recognize.
  • Learn and follow independent, non-biased experts including:


Dogs LOVE US!Our treats are always made in the USA with 100% all-natural, USA-sourced ingredients and absolutely no artificial/chemical/synthetic preservatives.

(Check out all the healthy Dogs Love Kale products at


Dogs Lvoe Kale cannot guarantee any health benefits

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10 Worst Ingredients in Your Dog Food

4 Dangerous Ingredients (According to Studies) Commonly Used in Dog Food

Misinformation About Ethoxyquin from Pet Food

Propylene Glycol - Dog Food Aid or Automotive Antifreeze?

BHA - A Time Bomb in Your Dog's Food?

BHT, BHA and TBHQ - Oh My! Dog Food Ingredients to Avoid (with Infographic)