Looking for animal emotions data for ML

Hi. I am looking for suggestions and advice to help me find:

1. Videos as data for machine learning on animal emotions: anxiety; distress; pain; fear; aggression; warning; etc.

2. Ongoing or completed research  (and data) using photos and videos with ML/AI and recognition (facial, gesture, voice, speech) software for animal identificaion.

3. Any known existing code and people familiar with for #1 and #2 so I don't have to start from scratch.

I am trying to build digital platform for animals and pet people, and animal identification and behaviour deciphering using a phone camera is part of the features I plan to implement. I am starting this for pet and farm animals before extending to wild life in the future.

Any tidbit of suggestions and advice will help. Do let me know if you have questions. Thank you.