Hey Carl, this is gonna look very cool!
The combination of figure pose and dog-behaving-badly is very well chosen.
As a suggestion: You can use some appropriately bent clear stretched sprue for replicating the...ehm...how shall I say....liquid flowing from the dog. Fix it with transparant-drying acrylic paste. And why not splash some Tamiya clear yellow over it to finish it off. I did something like this to emulate slime dripping from my T-Rex model (see my vBench).
Looking forward to the end result!
Cheers,
Adrian