Hehehe, couldn't resist borrowing the title from a tvTropes article.
A small band of Deinonychus is mobbing an Utahraptor and chasing him away from the woods into a clear at the end of a steep slope.
Utahraptor ("Utah thief"), is one of the (if not THE) largest genera of dromaeosaurid known. The largest specimens are estimated to be measuring between six and seven metres in length. Equally large is its signature "killer claw", with the bony core measuring some 22 centimetres (also, consider this was only the core of the claw, with the keratin coat it probably was larger).The fact that this dromaeosaur was reasonably large, along with it being discovered at the time of the Jurassic Park movie adaptation was being filmed, led to this animal quickly becoming one of the most popular and recognizable raptors.
I know, I know, there is no fossil evidence that both carnivores lived together, (there's an 11-million-year gap between the last known fossil of Utahraptor and the first known remains of Deinonychus), but just go along with me on this one, okay? I got inspired after seeing a TV special about Microraptor, and then I remembered one of the coolest two-page spreads of a dinosaur magazine I used to collect, about a trio of Utahs scaring away a pack of Deinonychus off their kill. And that got me thinking that, if modern small birds are able to mob and drive away larger birds of prey, this should have been seen also in theropods. And it makes sense that if you're a small carnivore who lives in groups, you'll band with members of your species to expel other animals who are not only larger and more dangerous, but that feed on pretty much the same food sources than you.
Cookie for whoever finds the male Deinonychus!