Very young
Arctic wolf (Canis lupus arctos, vlk arkticky) from ZOO Brno, Czech republic
Story of the photo: this youngster looks pretty angry, right?
in fact, it was very friendly, it came close to me, posing for camera. Then it yawned and as animal yawning is always interesting, I was shooting like crazy. In the last phase of yawning, wolves always show teeth and if you manage to capture it, you gain photo of "very angry wolf"
so this is only only illusion
after it stopped yawning, the pup gave me nice smiles again
now I await hate comments "stop torturing the poor wolf" from those who are lazy to read the description
Thank you for your comments and faves 
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Canon 500D, kit lens 55-250 IS____________
INFO ABOUT THE ANIMAL:Name: Arctic Wolf (Canis lupus arctos)
Location: Canadian Arctic and the northern parts of Greenland
Size: 1.8 m long, 79 cm high
weight: 75 kg
Diet: Caribou, musk oxen, Arctic Hares, seals, ptarmigan, lemmings. Arctic wolves eat all their prey, also its bones and fur
Conservation status: common. They still live in the whole of its original range, because local conditions are too extreme for humans.
Interesting facts: mother gives birth to some 2-3 pups in May. Pups are born almost black – as they get older, colour of their fur turns to white. Adults are completely white, even in summer
| arctic wolves live in the pack of some 7-10 members. Only alpha male and alpha female mate
| arctic wolves have shorter ears and nose than other wolves species. They also have thicker fur, shorter legs
| they do not run too fast, their advantage is persistence
ZOO: to see exhibit of arctic wolves, click
Here 
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MY WOLF PRINTS
To see more, look at my
WOLVES GALLERY 
This photo belongs to me and I can very easily prove, that it was me, who took this shot. So please, respect my copyright 
if you want to use my work, ask me first to gain my permission, please! Thank you 
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Sta.sh
great shot, great wolf... now must look for smiliey photos