How to know if you have low testosterone?

Here are warning signs to know if you have low testosterone:
1. Low Sex Drive
2.Difficulty Achieving Erection
3.Low Semen Volume
4.Hair Loss
5.Fatigue & Lack of Energy
6.Increase In Body Fat
7.Decrease In Bone Mass
8. Mood Changes

Where are the following

1.)dr. natterson- horowitz came to realize that their isn't much of a difference between animals and humans. just like humans, animals can suffer from illnesses and diseases like breast cancer, self injury, anxiety, and many more. she also discovered how they even treated and performed surgical procedures on animals just as if the animal it self were human. the los angeles zoo called dr. natterson- horowitz because they knew that she was a doctor and that  she would be able to recognize what was wrong with the gorilla. they knew that humans and gorillas were similar, so instead of calling another veterinarian, they called a doctor.