No because sometimes they have to put animals down and that’s something I, as a full hearted human, could not do.
Hey, I'm a little confused on what your asking but. Heres my answers. No, HIV can only be contracted through sexual contact
There are obviously A LOT of them. Like how your brain is slowly deteriorating, which is scary and dangerous. I can't cover everything but I have a website link you could visit that talks about this subject
https://www.drugabuse.gov/publications/research-reports/heroin/what-are-long-term-effects-heroin-use
If you mean why here you go then