[uujudy]

Gracie, if they're in your yard they're most likely fire ants, especially if you see little ants coming out of them. lol
The Florida fire ants are tiny by Louisiana standards. When we first moved into our villa I felt things biting my toes in the dining room, and realized they were tiny ants. I set out ant traps everywhere, to no avail. They Massey guy said they were fire ants. One treatment outside and they were gone.

Those bigger dirt piles along the roads and in the fields are tortoise mounds.