My dear dog, Ned(RIP) was totally amazing. If I was having a bad time, he would jump up on the bed uninvited, which he knew he wasnt aloud to do, but he knew I needed him near.
Once when I collapsed in the early hours of the morning on the way back from the toilet, he curled up against my back, until I was able to crawl back to bed. He certainly looked after me in his own little way.