On a global scale and on average, life for humans is getting significantly better than, say, a century ago. The number of people dying from preventable diseases, war, natural disasters has been steadily going down for a while now.
Of course there are many more people on earth than there were 100 years ago, so accumulatively there is a lot more suffering now.
Also, the lives of individual people, the state of certain countries and areas are certainly getting worse.
As for non-human animals… For most of them the world is getting increasingly less habitable and for those who are raised in an industrial setting for human consumption, living conditions are largely atrocious.
I think your question is too broad for a single answer. But you might be interested in this now 17 year old (!) TED talk by the late Hans Rosling, which at least partially answers your question: www.youtube.com/watch?v=hVimVzgtD6w