how old was your baby when they started walking?

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         Hi ladies. I have a question, I don't know if I am worrying for no reason but I'm a bit concerned about my one year-old. He turned one in January and shows no interest at all to start walking. When we try standing him up he will just drop to the floor and get pissed. He is my second baby and my first was showing signs before his first birthday. I haven't asked his doctor yet but I will address my concerns at his next appointment I just wanted to see if anyone else has experience something similar with their little ones.