The news lately has been full of stories about, in particular, pit bulls mauling humans. This is a horrible situation and has so many underlying causes and subtexts. I don’t want to go into the whole moral, ethical, training, genetic, behavioural and lifestyle dilemma here. I would like instead, to ask if there is any way a supplement could help the situation.
What would the effect be of giving a pit bull a natural supplement? What does the science say?
The biochemistry of aggression
Biochemically, aggression in dogs is complicated. A solution which is often recommended to owners of aggressive male dogs is neutering. But studies on the relationship between testosterone and other androgens (male sex hormones) and aggression have been inconclusive1,2. Some dogs were even found to be more aggressive after neutering.3
Studies on the serotonin pathway are more consistent. Serotonin is the ‘happiness’ and ‘calmness’ neurotransmitter. Aggressive dogs have low serotonin levels. This is particularly true of the breeds known to be prone to aggression.4-8 For this reason, SSRIs (selective serotonin reuptake inhibitors, which increase the levels of available serotonin) are often prescribed.
How can we influence this aggression?
So, of course, me being me, would ask this question: Is there a way to decrease this anger response using diet or natural supplements?
With low serotonin seemingly being the main instigator of aggression in dogs, let’s look at ways to increase serotonin. Now, contrary to popular opinion, you don’t need fancy pharmaceuticals to do this. It can be very effectively achieved using these three safe, natural ingredients:
Tryptophan
This one is easy. Tryptophan, an amino acid, is what your dog’s body uses to make serotonin. So, the more tryptophan in circulation, the more serotonin can be made. Happy, calm dog.
L-Theanine
L-theanine is quite a magical amino acid. It increases both dopamine and serotonin production in the brain. It also increases GABA activity. GABA (gamma amino butyric acid) is called an inhibitory neurotransmitter. It is the policeman of the brain, down regulating all the excitable pathways. And then (this is the magical part) L-theanine directly influences brain waves, producing the same brain waves produced during meditation – alpha waves. So, it is a little shot of meditation for your angry dog’s brain.
Inositol
Inositol is a B vitamin that has been shown to increase serotonin receptor sensitivity. At the same time, it also increases the brain policeman GABA, which blocks things like anxiety, stress and fear.
Conclusion
Are natural supplements going to change highly ferocious, reactive dogs into teddy bears? I doubt it. There are way too may other factors at play. But could these nutrients be another resource in the fight against fighting? Yes, I think so.
These three ingredients can be found (together with other calming natural ingredients) in our products Serenity Formula and Calming chews.
References:
- Neilson J. C., Eckstein R. A., Hart B. (1997). Effects of castration on problem behaviors in male dogs with reference to age and duration of behavior. J. Am. Vet. Med. Assoc. 211, 180–182.
- Guy N. C., Luescher U., Dohoo S. E., Spangler E., Miller J. B., Dohoo I. R., et al. (2001). Demographic and aggressive characteristics of dogs in a general veterinary caseload. Appl. Anim. Behav. Sci. 74, 15–28. 10.1016/S0168-1591(01)00153-8
- Guy N. C., Luescher U., Dohoo S. E., Spangler E., Miller J. B., Dohoo I. R., et al. (2001). Demographic and aggressive characteristics of dogs in a general veterinary caseload. Appl. Anim. Behav. Sci. 74, 15–28. 10.1016/S0168-1591(01)00153-8
- Reisner I. R., Mann J. J., Stanley M., Huang Y., Houpt K. A. (1996). Comparison of cerebrospinal fluid monoamine metabolite levels in dominant-aggressive and non-aggressive dogs. Brain Res. 714, 57–64. 10.1016/0006-8993(95)01464-0
- Haug L. I. (2008). Canine aggression toward unfamiliar people and dogs. Vet. Clin. N. Am. 38, 1023–1041. 10.1016/j.cvsm.2008.04.005
- Rosado B., García-Belenguer S., León M., Chacón G., Villegas A., Palacio J. (2010). Blood concentrations of serotonin, cortisol and dehydroepiandrosterone in aggressive dogs. Appl. Anim. Behav. Sci. 123, 124–130. 10.1016/j.applanim.2010.01.009
- León M., Rosado B., García-Belenguer S., Chacón G., Villegas A., Palacio J. (2012). Assessment of serotonin in serum, plasma, and platelets of aggressive dogs. J. Vet. Behav. 7, 348–352. 10.1016/j.jveb.2012.01.005
- Amat M., Le Brech S., Camps T., Torrente C., Mariotti V. M., Ruiz J. L., et al. (2013). Differences in serotonin serum concentration between aggressive English cocker spaniels and aggressive dogs of other breeds. J. Vet. Behav. 8, 19–25. 10.1016/j.jveb.2012.04.003
2 Responses
I have a dog that is a rescue and she is food aggressive and unfortunately she fence fights as well. She seems to have a trigger like a pitbull, when the switch goes on she changes from a sweet loving dog to a dog that wants to attack. I would think that the seritonin will also help her chill and not be a scared dog. She looks like a big deal, but she is scared of noises and anything new or noisey.
I am trying hard to stop the fence fighting but the neighbours dogs instigate and she is happy to run up and down the fence with them. I have the Serento calming collar on her which definately helps.
At dog training she won’t eat her treats at training but in the car she gobbles them up. I think it is due to fear. She doesn’t look scared but if they put a drum our or tub etc she is nervous, and sometime jumps back. I am trying to expose her to different things and sounds to build up her confidence. She used to be a dog on the streets, so something happened as a very small puppy.
Hi Sharon
Apologies for the late reply. I think you are correct, your girl’s issues are from trauma as a youngster. Try the Serenity Formula or the Calming chews, they will make a difference. and carry on with the training and desensitization.