It doesn't look like a dandelion. Dandelions have bright yellow flowers that turn into "clock flowers" the following day which then disperses their seeds to the wind.
The plant in the photo looks more like prickly lettuce
https://en.wikipedia.org/wiki/Lactuca_serriola a common "weed" across the South. If it is prickly lettuce, when the weather gets warmer, it will send up a flower stalk, just like domesticated lettuce, flower and set seed. Lettuce seeds, unlike dandelion seeds, have no sail to them, and are not wind dispersed.
You can distinguish dock from dandelions and prickly lettuce from the color of the taproot -- dock has an orange color to it.
Tastewise, dandelions are more bitter than lettuce, although wild lettuces are significantly more so than their domesticated cousins. Dock, being high in oxalic acid, has a sour taste to it.