never see the same
Now when I see dandelions, I think to myself "Aha! That one has pointy leaves, not round, and they are sticking up, not close to the ground. That is a true dandelion." Or "That's not a true dandelion, it's cat's claw... err, no, cat's ear" (almost every time, "cat's claw" comes to mind first, even though I'm not familiar with it... per a search, it looks similar to yellow jessamine).
The yellow flowers themselves look identical to me on both kinds of dandelions, though this one below didn't have a ball of unopened petals in the middle. Its petals were all open.
It's like when as a kid, I learned the difference between white oak which has the round/curve-edged leaves versus black oak which has the pointy-edged leaves, not to mention, blackjack oak.

The yellow flowers themselves look identical to me on both kinds of dandelions, though this one below didn't have a ball of unopened petals in the middle. Its petals were all open.
It's like when as a kid, I learned the difference between white oak which has the round/curve-edged leaves versus black oak which has the pointy-edged leaves, not to mention, blackjack oak.
