Sad reacts

No. Just no.

He knows da wae!

I think it's because they don't want to get eaten by other animals while they're still alive.

That dog looks like Sid from ice age

I had a dog when I was a kid, she never ran away until the day she died of old age, she disappeared and we found her an hour later laying beside the stream we would walk to every day she wanted to go there one more time and passed away at her favorite spot but didn't want me there with her. I buried her beside that stream because I knew that would make her happy.

Can someone link me a study or paper for this?

That's not why they do that.

My poor dog kept trying to walk away from us. She no longer responded to anything we said and couldn't get comfortable anywhere. We just lost her.