This is a very silly painting for a few reasons. This animal's forefeet weren't made for gripping and, even if they were, a predator made to hunt with natural weapons wouldn't need a spear. (Nevermind their brains not being wired to fabricate stone tools)
But, by gar, I felt like drawing a dromaeosaur with a spear. The really beautiful thing about art is that it doesn't always have to make sense.