I also want to put a plug in for dogs. I have struggled with depression on and off in my life, and two years ago I adopted a dog I saw being abused in the street. She was just a little puppy, and I absolutely did not want anything to do with raising a dog at the time, but I felt I had no choice. I picked her up and took her home.
Since then I have not been able to sleep past 7am in the morning without these two little eyes staring me down. But it is wonderful. She gives me relentless love every day, and she gave my life a really healthy structure it desperately needed. We go on walks three times a day looking for her doggy friends. I spent a lot more time in nature, because she doesn't give a damn for computers or video games. I know even some people look down on me for how much I love my dog, but they have no idea what I was like before. This dog saved my ass.
Now it is IMPOSSIBLE for me to just lie in bed, and that is a great thing, not a bad thing.