No Cameron Dallas is definitely not left handed. He is right handed.
These photos and videos prove it.
Video proof that Cameron Dallas is right handed
The first video from the 22nd July shows him and his best friend Nash Grier in their new apartment. If you look closely he favors his right hand all the time - swinging pillows and pointing with it!
Here he is again on the 3rd May signing a photo for a fan! Notice which hand he is holding the pen in?
Cameron on 27th April lying in bed using his right hand to scroll through his mobile phone
On Feb 17th he’s using his right hand (again) to feed an animal at the Zoo (what kind of animal? Looks like a some kind of cat?)
Here is Cameron on the 5th Feb and he is sewing a blanket - right - handed
On the 29th January he’s only just getting round to opening up his fan mail! His mother is helping him. She doesn’t look old enough to be his mother - she could be his sister! He uses his right hand to squirt some squirty stuff!
That's my proof! Hope you like it! X