1. https://www.cesarsway.com/dog-care/health-care-issues/Shake-shiver-and-tremble-Why-dogs-do-it
2. https://blogs.scientificamerican.com/dog-spies/fear-and-anxiety-may-shorten-dogs-lifespan/
3. https://vcahospitals.com/know-your-pet/addisons-disease-in-dogs-overview
4. http://www.akc.org/content/health/articles/addisons-disease-in-dogs-symptoms-treatment-prevention/
5. https://www.petmd.com/dog/conditions/endocrine/c_dg_hypoadrenocorticism
6. http://www.petmd.com/dog/conditions/ears/c_multi_otitis_media_interna
7. https://vcahospitals.com/know-your-pet/inner-ear-infection-otitis-interna-in-dogs
8. https://vcahospitals.com/know-your-pet/seizures-general-for-dogs
9. http://www.canine-epilepsy.net/basics/basics_index.html
10. http://vetmed.tamu.edu/news/pet-talk/seizures-in-dogs
11. http://todaysveterinarypractice.navc.com/todays-technician-epileptic-emergencies-status-epilepticus-canine-patiens/