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Why faking the Umami taste in dog food and dog treats with MSG is dangerous.

NO MSG for dogs

This should make headlines news across the world, if the world wasn’t hooked on feeding cheap non-meat dog foods. Most people are aware that dogs eat meat, that MSG is ‘bad’ for you, BUT not that a key ingredient in turning bland grain or vegetarian ‘dog food’ into something that your dog wants to eat is often MSG (in conjunction with other glutamates).

Note, this article is based on readily available information. You don’t have to believe all of it, but you might want to consider alternatives to the many versions of glutamates that disguise vegetables as that wonderful umami meat dog food and treat taste.

The following sequence of logic is why using unnatural flavouring additives to fool your dog into eating non-meat foods is a very bad idea (besides the many other reasons we have given in these HDT blogs like the bio-availability of actual meat and offal):

WHY using glutamates to fake meat taste can HARM YOUR DOG.

  • Dogs evolved to hunt, eat and love meat (and thus enjoy the umami taste)
  • Dogs have a SEPARATE group of taste bud just to distinguish the umami taste!
  • Grain and most veggies typically do not have umami taste
  • MSG does occur naturally in tomatoes and some cheeses but it of course isn’t the same taste as meat. Noting MSG in dog food is usually a manufactured crystalline form. So it is NOT a “natural flavour”. And crystalline MSG is NOT found naturally in non-processed MEAT.
  • Adding MSG and IMP (glutamate chemicals) in the right proportions can mimic umami taste (turn non meat into meat taste). It is the only reason bad dog food makers use it. MSG IS NOT BENEFICIAL to dogs.
  • MSG In Dog Food Can Cause Brain Damage. Ref 2
  • MSG flavourings can ALSO trick your dog into eating EXCESSIVE food, cravings that will have them plead for more food even when they are full. It can easily cause dog obesity and early deaths through obesity complications.
  • We have included a LONG list of the many ingredients that disguise msg in your dog food and non-single ingredient dog treats, making them VERY hard to avoid, UNLESS you buy single ingredient. (SEE BELOW)

Our previous article on dog taste buds and a dog’s ability to taste umami explains why dogs need/ desire a meaty meal is key to their evolutionary drive to hunt animal prey. They hunt animals to eat meat and survive, and meat is the essence of umami for them.

But here is the kicker. What if there was a way to trick dogs into eating cheap ingredients, and even make them obsessively crave more, even not knowing when to stop? THAT is MSG and MSG and IMG glutamate combinations deceit.

MSG allows many low quality, low MEAT CONTENT “dog foods” to pass as “palatable” to dogs. Even convince owners that their dogs LOVE these unnatural, LOW MEAT content dog foods.

For decades dog food labs have used this as one of the many methods of selling more of a nutritionally low product that with a little oil for a shiny coat, and good ads, has owners subjectively and wrongly assess these commercial dog foods as good.

Grains and vegetables are very bland and not bio-available to dogs (when compared to meat and animal products). If you train a dog to eat vegetables, they might like the crunch of a carrot or the rush of sugar from berries, but it’s not a NATURAL food (that they would regularly hunt in the wild), not something they evolved to eat. At best it should be a minor part of their diet, if pushed to survive on them.

no msg for dogs umami tom foolery How DOG tastes and human tastes are Fooled by MSG

“The first electrophysiological studies on rats and cats show little synergism between monosodium glutamate (MSG) and disodium guanylate (GMP) or disodium inosinate (IMP). However, DOGS like humans were sensitive to umami substances and showed a large synergism between MSG and GMP or IMP.” Ref 1

The “(DOG) response to the umami substances is independent of the response to salt.” Humans and dogs have a fifth receptor that is “unique receptor for umami substances.” That is why the use of artificial MSG to hook dogs onto it works so well.

The researchers also found that the “characteristic taste of snow crab meat is reproduced by mixing glycine, alanine, arginine, MSG, IMP and salts in a particular ratio (Konosu et al. 1987). When the umami constituents are eliminated, the characteristic taste of the crab meat disappears. Thus, umami substances are essential for producing the unique taste of many natural foods.”

If you want grain or veggies to taste like beef and chicken, a lab only needs to find the right combination of glutamates to fool dogs (and owners) alike. You don’t get what you pay for.

“In the canine chorda tympani nerve, a large synergism between MSG and GMP or IMP, similar to that found in humans. The synergism was remarkable at lower concentrations of MSG.”

This means that you only need a little MSG and GMP glutamates to turn an un-appetising cheap grain or NON-MEAT treat into something resembling a tasty meat dog treat. In that way MSG can appear down the list of ingredients by weight, but still exert a BIG taste effect.

But surely tricking a dog is fine, no damage can be done with msg?

Naturally occurring MSG is fine when it occurs in a vegetable naturally. In that case it is NATURALLY enhancing the flavour of the vegetable. The issue comes when dog food labs add the right proportions of the glutamate crystals to make non-natural dog food (vegetables), become dog food, and charge you money for it.

 HOW IS MSG disguised in your dog food and dog treats?

The following is so important that we have to quote it in full.

“Is there MSG in your pet’s food? MSG or monosodium glutamate is toxic to the brain and nervous system and can triple your dog’s insulin levels. MSG litters our pets’ food supply in the disguise of “safe” ingredients. If you see any of these ingredients on your pet’s food bag, put it back!” Ref 2

•Any type of hydrolyzed protein (e.g. hydrolyzed vegetable protein)
•Any type of protein isolate (e.g. soy protein isolate)
•Any type of textured protein (e.g. textured vegetable protein) We have several articles on the scourge of TVP.
Natural flavours or natural flavourings (e.g. natural beef flavour, natural chicken flavour, natural bacon flavour, natural cheese flavour, natural smoke flavour, etc.)
•Autolyzed yeast
•Hydrolysed yeast
•Yeast extracts or yeast nutrient or yeast food
•Soy extracts
•Soy concentrate
•Sodium caseinate or calcium caseinate
•Disodium inosinate or disodium guanylate (which are flavour enhancers effective only in the presence of MSG)
•MSG (Monosodium Glutamate)
•Monopotassium Glutamate
•Glutamate, Glutamic Acid, or free glutamate 

How MSG Changes your dog’s Brain and hunger response

“MSG is used as a flavour enhancer … but it’s actually quite tasteless itself. It works by tricking the brain into thinking food tastes good. It’s a type of neurotransmitter known as an excitotoxin, meaning it over-stimulates the brain, causing an overproduction of dopamine. This creates a brief sensation of wellbeing.” Ref 2

“But it damages the brain and alters its ability to respond to the signal from the hormone leptin that tells us we’re full … which is why, when you eat foods containing MSG, you just want to keep eating, making the food seem almost addictive.” Ref 2

A couple of things to unpack here.

“Labradors were predisposed to have a deletion in the genetic code of the POMC gene which scrambles the end of the gene and hinders its ability to produce the neuropeptides associated with turning off hunger. “  (ABC site). They might not be the only dog to have this issue, so you can imagine how much more difficult it becomes when a dog predisposed to thinking it needs to overeat, is given an artificial crystal additive like MSG that also tells it to REALLY demand excess food that it doesn’t need. The dog might then spend most of its time worrying about food, being an anxious and sometimes aggressive ‘food guarding’ dog.

You probably also know that dogs have their scavenger trait evolved from wolves that had to hunt to survive when they are unable to catch prey. It is NATURAL for a dog to eat as much as it can, whenever it can, and even hide food for later (burying or putting behind furniture in your house). If you own a dog that struggles with excess appetite, MSG is doing neither of you a favour.

In humans MSG has been found to trigger or aggravate learning disabilities as well as diseases like Alzheimer’s, Parkinson’s, and Lou Gehrig’s. In mice, injecting MSG into them has shown liver inflammation and obesity and Type 2 diabetes, neuroendocrine disturbances, behavioural disturbances, as well as foetal brain damage.

AND the MSG and effects are accumulative.

There are also other ways that MSG can enter into the dog food chain, even without direct addition of the chemical.

“There’s a product called AuxiGro that contains hydrolyzed proteins and monosodium glutamate. AuxiGro is used to increase crop yields and is sprayed on crops like lettuce (various types), broccoli, tomatoes, potatoes, peanuts, celery, cucumbers, navy and pinto beans; grapes; onions; bell, green and jalapeño peppers, strawberries and watermelons.” Ref 2

“When vegetables and fruit start to spoil, they’re often used in pet foods and advertised as all natural healthy ingredients. There’s no way of knowing whether MSG is in the produce in dog foods. Processed free glutamic acid is in many dairy products like milk or cottage cheese, so if you add dairy to your dog’s diet, he may be getting some MSG that way too.” Ref 2


Umami is a natural meat taste dogs evolved tastes buds for to be rewarded for eating their kill (meat). That is why MEAT and single ingredient meat and offal treats are GOOD and Beneficial to a dog’s physical and mental wellbeing.

It is obvious that MSG (and other glutamates) have many names and can appear in many dog foods and treats that include vegetable or grain, intentionally or otherwise.

Not every dog will have a severe reaction to ingesting small amounts of msg. However, MSG is accumulative.

MSG when added to dog food is ONLY to enhance a boring flavour, a non-natural flavour, a non-meat flavour. Why would you want to cheat your dog, let alone unnecessarily give them a dangerous additive?

With so many versions of msg and glutamates it might be very difficult for you to avoid it in dog food.

Just another great reason why single ingredient MEAT treats, that have NO additives are still and always will be the best thing for your dog.


1    Physiological Studies on Umami Taste.  Kenzo Kurihara, Makoto Kashiwayanagi.  The Journal of Nutrition, Volume 130, Issue 4, April 2000,

2    MSG In Dog Food Can Cause Brain Damage  Julia Henriques, Dogs Naturally Magazine.  September 19, 2016

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