It really all comes down to construction lines (and practice, of course). Going to use this as a reference (belongs to Kati H on dawntheives.de).

https://s24.postimg.org/kmoukolat/Wolf_Eder1302-_Xelha-01.jpg

From there I did a sketch with the construction lines. I don't often do this and it's kind of hard to see, but I drew a rectangle box in the middle of the wolf to show to show the "height" of the wolf's body, so to speak.

https://i.gyazo.com/872879c4dc9cc663ebcfe0c27614a735.png

And from there I added details~

https://i.gyazo.com/48dcb7c0134b8e63f810ba9d33b9fbca.png

This is far from perfect (didn't focus too much on the legs, those are kinda off), and my anatomy isn't always spot on, but I hope this helps. ;u;

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http://i68.tinypic.com/2h8bcxk.jpg

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http://i64.tinypic.com/24n1gft.jpg