PUZZLE 095 Pop-Up Prairie Dogs

There are prairie dogs living in these holes, which are connected by tunnels underground.
They pop up if they sniff a carrot nearby, and they go back into their hole if you go near them.
Holes that are joined by tunnels and adjacent to each other are linked, and the prairie dogs in them react as well.
Touch the holes so that there are prairie dogs peeping out from all of them.

Hint 1

There is more than one way to do this.
The shortest possible way involves five steps.

Hint 2

To solve it in five steps, you need to touch five holes once each, and it doesn't matter what order.
Figure out which holes.

Hint 3

Continuing on from hint two...
Touch all of the holes that have two tunnels leading to them.

Super Hint

Continuing on from hint three...
Now let's look at which holes not to touch.
Those are all of the ones that have three tunnels leading to them.

Answer for 'Pop-Up Prairie Dogs'

The answer is as follows.