Yes it is safe if you just stay next to the waterfall and do not go deep to the forest.

Hi there, yes the water fall should still be OK in February... so certainly worth going to see.... Take mosquito repellent with you and good walking shoes! It's a bit of a hike! Apparently now it's way down at the end of July~

Hello Charmaine. You park as you enter the Safari Park area, (ignore parking signs driving up the road) It's a good kilometer from the main road or more before the parking area which is to the right .... it's free. Now you have two options to get to the waterfall area. 1. Walk pass the Safari park area and there are trucks to drive you most of the way up, 100 baht per person. When they drop you off you'll see a lot of people swimming, in the pool area, but get on the path (left and up) and keep climbing or you'll miss the best view of the water falls. It was not well sign posted last time I went up. Do wear good non slip shoes as it can be slippery on the rocks. also mosquito repellent might be a good idea, perhaps some water too, although you can buy on the way up. 2. You can walk all the way up, but it's long hard grind! Which takes 45 mins to an hour to get up. At the end of the paved road you'll see two entrances , keep to the left. If you use the right side, they charge you 50 baht I think, but that is really for the gardens, although you can still reach the falls that way. Earlyish in the morning say 9 or 10 am it should be less people and a bit cooler. It's worth the effort which ever way you go... coming down is easier! The Safari part and elephants are separate!

not advisable. However one can swim a little

That was a different waterfall that Paul Nicholls fell, one that few people go too. I don't remember hearing that he was attacked by 15 dogs.... that sounds like fake news to me! Na Muang falls, (both of them 1 and 2 ) are usually very crowded and it would be highly unlikely anyone would get lost there or get attacked by dogs, unless going up areas which are sign posted as no go areas.(up beyond the main falls) I go to these falls at least two or three times a year, I can't say that I've seen dogs. Do wear good non slip shoes, if you decide to go as it can be slippery on wet rocks.

I would not try going all the way up, after about 3pm.

Did you ever consider how cruelly the elephants are treated when they are trained to do safaris? They suffer terrible pain (many severe beatings) and lose their liberty so people can have a bit of fun on vacation.