|*Hello from Sid and the Critique Club*
An appealing image that partially meets the challenge.
What a gorgeous beast, complete with all her glorious imperfections, a chunk missing out of her ear, tongue like protrusion from her mouth covered in plant debris, she's a stunner! I say partially meets the challenge because, appealing as she is, she doesn't convey a sense of happiness per se but then neither does she make me feel unhappy, I would say ambivalence is the winner here.
Your focus and DOF is good with the cow nicely isolated from the background with a hint of bokeh coming through, nicely done. In a sense I feel with your commenters remarks about sharpness, yes it is sharp but certainly not over sharpened in the sense that so many of the images here are, it seems to me to be perfectly acceptable.
Apologies fro the delayed critique, to use another quote, 'better late than never', I hope, Sid