How can I keep my independent two-year-old safe?

My friend Mindy had a recent challenge with her two-year-old son. She wrote:

Shelly, We have a big challenge. I like to leave our doors open to the backyard, so Thomas and the animals (we have two dogs and a cat) can go in and out as they wish.

Today Thomas crawled under the automatic gate into the front yard!

Then he came around to the front door and played a game out of it. But I’m terrified he is going to go near the street or in it, or someone is going to snatch him. I really can’t watch him well enough now that I have Tabitha (3 mo.) to ensure he won’t do it again, and there is no way to alter the gate to prevent his tiny little body from going under it. What do I do? read more