Animal Welfare Professionals

We know that nutrition plays a big part in brain development and lack of good nutrition can lead to a variety of problems. With stray dogs eating whatever they find on the street and stray momma dogs lacking proper prenatal nutrition there would have to be long term effects from that. I am interested in taking a deep dive into this for "behavior" dogs. Has anyone gone down this path? Do you have some resources to share? Do you have experience with any holistic/homeopathic/naturopathic vets? I see some tests out there where you can send in a fur sample to test for heavy metals. Anyone out there use one? 
Thank you!! 

This paper from 2019 is an informative read! 

A Review of Medical Conditions and Behavioral Problems in Dogs and Cats

We know that nutrition plays a big part in brain development and lack of good nutrition can lead to a variety of problems. With stray dogs eating whatever they find on the street and stray momma dogs lacking proper prenatal nutrition there would have to be long term effects from that. I am interested in taking a deep dive into this for "behavior" dogs. Has anyone gone down this path? Do you have some resources to share? Do you have experience with any holistic/homeopathic/naturopathic vets? I see some tests out there where you can send in a fur sample to test for heavy metals. Anyone out there use one? 
Thank you!!