There are several places, they all involve Y elevation changes.
They are all when done inversly, death traps.
EA/Mythic did a 60% to 70% job (if that much) on the taming change, some are incredibly stupid, stand in one spot in the house in the Bull Pen and if the Bull walks across the straw/hey bits (NOT BAILS) on the floor, your get the message.
This entire line of sight is .... incredibly FUBAR'd.
A really great example is the White Wyrms Nest. There is a mound between the two ledges, if you stand on that mound (theoretically a high point) and the WW is at one of a dozen spots that are either the same elevation or lower and you get "You can not see that ....". One spot allows the WW to be hitting on the GD standing right next to you as in you are between the WW and the GD on this mound and you get "You can not see that ...." as it is doing damage to your GD.
*Shrug* but be advised, I would think EA/Mythic would consider using one of those spots as an exploit. I do consider them an exploit given the current ... definition of taming.
You can find, quite readily, numerous places to safely tame Frenzied Ostards. A lot have been blocked but .....