This was done for the Sony Playstation 2 video game, God of War 2. This depicts the Chimera from Greek mythology. I first did a quick sketch of it, and then painted it up in Photoshop.
This was pretty cool, and I couldn't remember where I found the reference, but I drew something based off of your pictures, I believe. The revised version looks pretty great too.
Whoa! Radical! Just in case, Khimaira is just the greek version of the northern Danube thracian (today romanian) name "ZIMBRU" for bison/wisent. This is the "mithological" animal in question. Also, CIMBRU (pronounced "tchimbru") is a romanian name for a "horned" plant (Satureja hortensis=savory). Strange that in greek language, this plant is called "thymbra", a name similar with romanian "timbru"(postal stamp). The oldest romanian stamp (and also one of the most expenive in the world) is actually the so called "buffallo/wisent head" from Moldova (eastern Romania region; the auroch, sometimes mistaken as a wisent, is the symbol of this region).
The scales of the snake are the best detail here, I really like how it 'fades' as it reaches the body of the creature. The chimera's design is pretty cool, the lion's head under the goat's neck is a nice touch, it's my favorite monster in GoW3.