Wards can be placed underneath Dragon
Recently, I've been seeing a lot of pink wards put under dragon, so that the only way to get rid of the ward is to attack dragon itself.
Before SR update, Dragon also had the Baron passive which rejected wards around it and pushed them off to the side. I don't know if it's me, but it doesn't work on the dragon now...
Hope Rito fixes this soon...
EDIT:
Here's an alternative if you want to get rid of those wards underneath dragon:
[{quoted}](name=xaadus creedus,realm=NA,application-id=3ErqAdtq,discussion-id=XLXvFyhi,comment-id=000300000000,timestamp=2014-12-28T09:14:19.224+0000)
Champ won't aa Dragon unless you click on it, it WILL however aa pink ward even if you don't click on it. try it in a normal match and watch how it works.