Its Easier if you open the gif you want and then right click>inspect element you will get something like this if you are using chrome sta.sh/02edjgdb81fg just right click that marked lines when you cross over them it will show your gif and just copy that and paste it to your journal or profile anywhere on your profile and it will work 
except comments box OFC
except comments box OFC 
NP ^^ i hope it helped a bit 