A subadult female bear knocked down and bit an angler in his 60s late Friday evening, Aug. 21, near the confluence of the North Fork and main stem South Platte River in Jefferson County, a stretch of water Front Range anglers and dog walkers use constantly. Colorado Parks and Wildlife tracked the bear with a dog team and euthanized it the next morning. It’s the sixth reported bear attack in Colorado this year, and CPW says 2026 is on pace to be the worst on record for bear-human conflict.

If you hike, fish, or walk dogs anywhere in the foothills west of Denver, this isn’t a story to skim past. It’s the second attack this summer within roughly 15 miles of a trail you or your dog have probably been on, and the pattern behind both is only getting worse as fall approaches.

Quick Verdict: What’s Happening and What to Do

Detail	What You Need to Know
Latest attack	Aug. 21, 2026, evening — angler bitten near South Platte confluence, Jefferson County
Bear’s fate	Tracked by dog team, euthanized Aug. 22 per CPW policy
2026 attack count	6th reported bear attack statewide this year
Bear reports, statewide	6,129 (Jan. 1–Aug. 13, 2026) vs. 3,115 same period 2025
Why now	Drought and a May freeze wiped out chokecherries and acorns below 8,000 feet — hyperphagia bears have almost nothing to eat
First 2026 attack	June 21, Apex Park, Golden — bear stalked a hiker 30+ minutes despite no food present
Dog-specific risk	Dogs roughly double bear-conflict odds and trigger the majority of encounters
What to do now	Leash up, carry bear spray, avoid dawn/dusk, make noise on brushy Front Range trails

What Happened at the South Platte

The attack happened around 8 p.m. Friday as the man walked back to the North Fork trailhead parking lot after fishing, according to Colorado Sun reporting. He wasn’t carrying fish. Witnesses said a 50-60 lb subadult sow knocked him to the ground and bit his legs over several minutes before his friends managed to scare it off. No cubs were found nearby and the bear showed no signs of nursing, which rules out the most common defensive-mother scenario.

CPW officers, working with USDA Wildlife Services and a dog team, located the bear early Saturday and euthanized it. That’s standard protocol once a bear has bitten a person, regardless of what provoked the encounter. It’s grim, but it’s also the same outcome you’d expect for a food-conditioned or defensively wired animal that’s already proven it won’t back down from a person.

This is Colorado’s sixth reported bear attack of 2026, and it landed in a canyon that gets heavy foot traffic from Denver-metro anglers, hikers, and (yes) a lot of leashed dogs.

Why This Is Colorado’s Worst Bear Year on Record

The number that matters more than any single attack: CPW received 6,129 bear sighting and conflict reports between Jan. 1 and Aug. 13, 2026, compared with 3,115 over the same stretch in 2025. That’s nearly double, and it puts this year on pace to be the highest since the agency’s statewide digital reporting system launched in 2019.

The cause isn’t a mystery. Colorado came out of one of its lowest snowpack years on record, vegetation budded early, and then a hard freeze in May hit right as chokecherries and acorns were setting. A CPW district wildlife manager put it plainly to the Colorado Sun: normally when chokecherries fail, acorns carry the season, or hawthorns fill in. This year, none of it came in. It’s a near-total natural food failure below 8,000 feet.

That failure is colliding with hyperphagia, the pre-hibernation feeding phase where a bear needs to pack on fat fast. During hyperphagia, bears can spend up to 20 hours a day foraging, chasing as much as 20,000 calories. Take away the chokecherries and acorns that normally cover most of that, and bears go looking somewhere else: campgrounds, trash cans, picnic tables, and trails where dogs and food smell alike to a hungry animal. We covered a similar hyperphagia-driven squeeze at Glacier National Park’s St. Mary Campground last week. Same biology, different mountain range.

The Apex Park Attack Wasn’t a One-Off

Two months before the South Platte attack, on June 21, a bear grabbed a hiker’s backpack, made contact with her leg, and followed her for more than 30 minutes at Apex Park in Golden, a 700-acre open space park that sits inside city limits, minutes from downtown. She had no food on her. Sticks, rocks, and shouting didn’t move the bear off; it eventually wandered away on its own, then followed two more hikers on a nearby trail. CPW described the animal’s behavior as habituated and closed the park while officers searched, though the bear was never located.

That’s the detail that should worry Front Range dog owners more than the drought statistics. A bear that stalks a person with zero food attractant present isn’t behaving like a hungry animal opportunistically checking a picnic table. It’s behaving like something that’s learned people aren’t a threat, and possibly that people mean food. CPW hasn’t confirmed food-conditioning in that specific bear, but the behavior pattern is the one wildlife agencies always flag as the precursor to a bite.

Two attacks, roughly 15 miles apart, on trail systems Front Range dog owners use every week of the summer. That’s not two unrelated headlines. That’s a season.

Dogs Change the Math in Bear Country

Here’s the part general bear-safety coverage skips: your dog isn’t a neutral bystander in these encounters. A 326-case peer-reviewed study found that hiking with a dog roughly doubles the odds of a bear conflict, and dogs themselves triggered 54% of the incidents in that dataset, more often than the bear did. Unleashed dogs showed up in conflicts nearly six times as often as leashed ones.

The mechanism is simple and it plays out the same way in Jefferson County foothills as it does in Wyoming or Montana. An off-leash dog ranges ahead, finds a bear in the brush, and does one of two things: it either sprints back to you with the bear right behind it, or it stands and barks, which reads as a challenge. Neither outcome is one you want to test out on a bear that’s already running a caloric deficit and short on patience.

How Common Is a Bear Attack on a Trail With a Dog?

Bear attacks on people remain rare in absolute terms: six statewide in 2026 against 6,129 reported bear encounters and sightings. But the risk isn’t evenly distributed. It concentrates in drought years, late summer hyperphagia, and situations involving an off-leash or barking dog. If you’re hiking Front Range foothills trails between now and first snow, your actual exposure is meaningfully higher than the statewide average suggests.

What to Actually Do on Front Range Trails Right Now

1. Leash your dog, every trail, no exceptions. Not “under voice control.” A physical leash removes your dog’s ability to decide whether to chase, bark at, or approach a bear it stumbles on.
2. Carry bear spray and know how to use it before you need it. Practice the draw at home. Every documented case this season where spray got deployed broke off the encounter.
3. Make noise on brushy or blind-corner sections. Foothills trails with dense scrub oak and chokecherry brush are exactly where a surprised bear is most likely to react defensively.
4. Avoid dawn and dusk hikes through late September. Bears in hyperphagia are foraging up to 20 hours a day, and low-light hours are when Front Range trail encounters cluster.
5. Store all food and trash the way you would in grizzly country, even at a Jefferson County trailhead. Dog treats and kibble count as attractants.
6. Check CPW’s current bear activity reports for the trailhead you’re headed to before you go, not after you get there.

If you want the deeper mechanics of why dogs specifically raise conflict odds (leash effect, the “boomerang” scenario, what the data says about dogs as early-warning systems), our breakdown of the BYU/Journal of Wildlife Management study is worth fifteen minutes before your next foothills trip. And if smoke has been keeping you off higher trails this season too, our rundown of Colorado’s wildfire smoke situation covers the other reason air quality and trail choice have been complicated this summer.

Other Colorado Wildlife Worth Knowing Before You Hike

Bears aren’t the only Front Range hazard getting more aggressive this season. We’ve also covered moose encounters, which injure more dogs annually than bears do, and the broader patchwork of dog rules across national parks and open space systems if your trail plans cross jurisdictions this fall.

Bottom Line

Six bear attacks in a single Colorado year, a near-total chokecherry and acorn failure below 8,000 feet, and two incidents on Front Range trails dog owners use routinely: this isn’t a story to file under “wildlife news” and move past. Hyperphagia doesn’t end until bears den up, typically well into November for Colorado’s black bear population, which means this pressure isn’t easing off anytime soon.

None of this means staying off the trail. It means the leash stays clipped, the bear spray comes out of the truck and onto your hip, and you treat every brushy switchback on a foothills trail like a bear could be twenty feet into the scrub oak. This year, that’s not a paranoid assumption. It’s the baseline.

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Attack details from Colorado Sun and Denver Gazette, reporting as of Aug. 22, 2026. Apex Park incident from the Golden Transcript. Drought and hyperphagia context from Colorado Sun. This is an active, developing situation — check current CPW advisories before any Front Range trip.