I know wolves are probably not supposed to be sweet but this one is- as soon as I saw it I went Aawwww...
I too love the expression you have captured and I think the foreground grass is really well done. Another option for making the background recede more is to put a wash of a mid too dark blue over it, as blue is a cool colour it makes things appear further away and hot colours bring subjects forward.
Anyway, I haven't seen any of your other work but if this is anything to go by I am in for a treat when I do
Ali(Jazz)