http://www.google.co.uk/imgres?imgurl=http://img3.wikia.nocookie.net/__cb20140729102432/howtotrainyourdragon/images/8/86/Thunderhero.jpg&imgrefurl=http://howtotrainyourdragon.wikia.com/wiki/Thunderdrum&h=850&w=1500&tbnid=L8NRU6_MhthWhM:&zoom=1&docid=hzfJI0kyHEAaZM&hl=en-gb&ei=91k0VIHVDszY7AaJn4HIBQ&tbm=isch&client=safari&ved=0CCUQMygIMAg
http://www.google.co.uk/imgres?imgurl=https://www.howtotrainyourdragon.com/images/uploads/dragons/dragon_hero_skullcrusher.jpg&imgrefurl=https://www.howtotrainyourdragon.com/explore/dragons/skullcrusher&h=850&w=1500&tbnid=pIkD1AdFd_3W5M:&zoom=1&docid=PB9hrSFJBTl4wM&hl=en-gb&ei=0lg0VMjPKZTzatn_gPgK&tbm=isch&client=safari&ved=0CCYQMygCMAI