What am I? (riddle)

Try to guess my riddle.

In the morning I have 4 legs,in the evening I have 2 legs and at night I have 3 legs. What am I?

My First Post

I like blog because I like really like to express myself. In blog I can have electronic pets and that is one of my favorite things to do. In blog we can also put comments and we can communicate to each other. One of the good things in blog is that we can be creative. Blog can be also our diary or journal.

There is also games or applications. We can create our own games too. In blog we can also practice typing a story. We can also put pictures inside blog. We can also put a video in blog.