Rats have a long list of natural predators, from owls and hawks to foxes, snakes, and even some domestic animals. Despite their reputation as survivors, rats sit squarely in the middle of the food chain, and dozens of species rely on them as a regular food source. Understanding which animals hunt rats matters whether you’re dealing with a rodent problem, trying to protect wildlife, or simply curious about the ecology in your backyard.
Owls: The Most Effective Rat Hunters
Owls are arguably the single greatest natural threat to rat populations. Their silent flight, exceptional night vision, and powerful talons make them perfectly built for catching rodents after dark, which is exactly when rats are most active.
Barn owls stand out as the most specialized rat and mouse hunters. Studies of barn owl diets in Ohio found that nearly 99% of the prey identified from their pellets were mice and other small mammals, including rats. Researchers examined over 8,600 skulls from barn owl pellets and found the overwhelming majority were rodents. Long-eared owls show similar preferences, with small mammals making up about 96% of identified prey. Short-eared owls and great horned owls also eat rats regularly, with small mammals comprising roughly 83% and 62% of their diets, respectively.
A single barn owl family can consume thousands of rodents per year, which is why farmers and pest management programs increasingly install owl nesting boxes as a chemical-free form of rodent control.
Hawks and Eagles
Daytime raptors pick up where owls leave off. Red-tailed hawks are among the most common rat predators in North America, with small mammals making up about 70% of their diet. Rough-legged hawks are even more rodent-focused, at nearly 97%. Marsh hawks (northern harriers) hunt low over fields and grasslands. One study examining roughly 1,100 marsh hawk pellets found that more than 925 of them contained at least one cotton rat.
Other raptors that regularly take rats include red-shouldered hawks (48% small mammals), goshawks (40%), and golden eagles (40%). Even bald eagles eat rodents on occasion, though they prefer fish and waterfowl. Smaller raptors like Cooper’s hawks and sharp-shinned hawks rarely bother with rats, focusing instead on birds and smaller prey.
Wild Mammalian Predators
Several common wild mammals prey on rats as part of a broader diet. Coyotes are opportunistic omnivores that eat small mammals alongside deer, rabbits, and fruit. Red foxes hunt small mammals, rabbits, squirrels, and birds, and they’re effective rat catchers in both rural and suburban areas. Bobcats regularly consume small mammals and rabbits, and their stealth makes them capable urban hunters where their range overlaps with rat populations.
Members of the weasel family are especially important rat predators relative to their size. Mink, long-tailed weasels, short-tailed weasels, and least weasels all prey primarily on small mammals. Weasels are slender enough to follow rats into burrows, which gives them an advantage that larger predators lack. Mink tend to hunt near water but will travel into upland areas to forage. Badgers dig up rodents from their underground homes. Even striped skunks eat mice and other small mammals when the opportunity arises.
Snakes That Specialize in Rodents
Several snake species are named for their preferred prey. Eastern rat snakes are among the most effective, with mammals making up about 66% of their diet based on stomach content analysis. Their prey list includes cotton rats, woodrats, voles, harvest mice, and house mice. These snakes play a meaningful role in controlling rodent populations around farms and homes, which is one reason wildlife agencies encourage people to leave non-venomous snakes alone.
Bullsnakes (a subspecies of gopher snake), king snakes, and corn snakes also consume rats regularly. Large constricting snakes like pythons and boas eat rats in tropical regions. Because snakes can enter tight spaces like walls, barns, and burrows, they reach rats in places that many other predators cannot.
Cats Are Less Effective Than You’d Think
The idea of cats as natural rat killers is deeply ingrained, but research paints a more complicated picture. A study published in Frontiers in Ecology and Evolution tracked feral cats and rats sharing the same urban space over five months. Researchers captured 306 videos showing cats and rats in the same area. Out of all that footage, cats made only three predation attempts, and the two successful kills appeared to involve unusually small rats, likely under 250 grams (about half a pound).
Adult Norway rats, the species most common in cities, are formidable opponents for cats. They can weigh 300 grams or more and will fight back aggressively. Most pet cats won’t engage with a full-sized rat at all. Only cats trained by their mothers to handle rats tend to take them on. The study found no evidence that cats meaningfully reduce populations of large urban rats. Their presence does seem to change rat behavior, pushing rats to be more cautious, but that’s not the same as population control.
Dogs Bred for Rat Hunting
Certain dog breeds are far more effective rat hunters than cats. Terrier breeds were originally developed specifically for this purpose: the name “terrier” comes from the Latin word for earth, reflecting their role chasing rodents underground. A trained terrier can kill four to five rats per minute, according to organized urban rat-hunting groups. These dogs work in teams, with some specializing in flushing rats out of hiding while others chase and dispatch them. The technique is quick: grab the rat by the neck, shake it, toss it, and move to the next one.
Breeds like Jack Russell terriers, rat terriers, and miniature schnauzers still carry strong prey drives for rodents. Some cities have volunteer groups that take trained dogs to rat-infested areas as a chemical-free pest control method.
Why Rat Poison Threatens These Predators
Rat predators face a serious and often invisible threat from anticoagulant rodenticides, the blood-thinning poisons commonly used to kill rats. When a predator eats a poisoned rat, it ingests the toxin secondarily. This “secondary poisoning” has reached alarming levels in wildlife.
A National Park Service study in the Santa Monica Mountains found that 92% of tested bobcats had been exposed to anticoagulant poisons. Among coyotes, 83% tested positive for exposure, and rodenticide was the second leading cause of death during the study period. Mountain lions fared worst of all: 94% showed exposure, including a kitten just three months old. The poison can even move a third step up the food chain. When a mountain lion eats a coyote that ate a poisoned rat, it receives a tertiary dose of the toxin.
This chain reaction means that the very animals best suited to controlling rat populations naturally are being weakened or killed by the chemical alternatives. Barn owls, red-tailed hawks, bobcats, and foxes all face cumulative exposure as they do what they evolved to do: eat rats. Conservation programs increasingly promote non-chemical rodent control, including habitat management and predator-friendly nesting boxes, precisely because keeping these predators healthy is one of the most sustainable ways to keep rat populations in check.