I’m sure you know at least one person who likes to take credit for things other people make happen. Often, these are the very same people who love to spread the blame. But when your boss takes credit for your work without ever acknowledging you, it makes you want to scream.
I know one boss who took over for someone else, and (as you probably already guessed) he took credit for everything good started by the last person. And he also blamed the last person for everything that went wrong. Even for things that didn’t go wrong. But he was artfully skilled at painting the picture to make him always come out the winner.