Rumblehorn

The Rumblehorn is like a heavily armored Rhino with Bloodhound abilities, Stoick the Vast owns a Rumblehorn named Skullcrusher!

The Rumblehorn is a Rare dragon of the Tracker Class.

Acquisition
The Rumblehorn can be purchased from the shop for 950 Runes.

A Rumblehorn Egg can be found when searching the following locations:

The Woods That Howled for 20h

If a Rumblehorn Egg is in an extra bag that the player chose not to purchase when searching with Toothless, the egg can be purchased for ? Runes at this time only.

Special Event
The Rumblehorn was avaliable to all players for a limited time from June 13, 2014 until June 16, 2014. The dragon could be obtained via a four hour search at Wildwood Shores or for the special price of 710 runes. If he turned up in one of Hiccup's bag and the player had not opted to use extra bags in their search, they could purchase the egg for 580 runes at that time only.

Egg Design
The egg design is like a normal egg but there is a line in the middle and it has colours like purple. pink and orange (these seem to be the colour of the Rumblehorn that hatches).