Raptors,like the Utahraptor pictured above, were pretty much Land-Eagles, with teeth, claws, and a deadly grip with their feet.
You could say feathered theropods are like chickens, but then you'd be saying that Eagles and cassowaries are just chickens. And that grizzly bears are just mice. Feathered theropods like the Utahraptor have even more weaponry than most mammalian predators today, being able to use their teeth, fore claws, and powerful feet to grab onto and kill prey.
Even the 'turkey sized' Velociraptor is nothing to scoff at, animals that can be dangerous and their size today, include Pit Bulls and Jackals, and no one says they look like rats.
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