Truck Bed and Hitch Crates: Carrying a Dog Safely in Colorado
Half the vehicles at a Front Range trailhead are pickups, and a fair number arrive with a dog loose in the bed. This guide covers what we could and could not establish about Colorado law, why the practice is a poor idea on mountain roads regardless, how to secure a crate in a bed properly, and what to look for in a crash-tested crate. It is written by people who drive dogs to trails, not lawyers; treat the legal section accordingly.
What the law says, as far as we found
Our legal research for this site, carried out in October 2026 and covering Colorado's pet-facility statute, the hot-car rescue law and the animal ordinances of the twelve cities we list, did not turn up a Colorado state statute that specifically prohibits carrying an unrestrained dog in an open truck bed. We are not saying no such rule exists anywhere in the state; we are saying we did not find one, and we are not going to invent one. Some cities and counties write their own animal-control ordinances, and a dog that falls or jumps from a moving vehicle can bring other provisions into play. If the question matters to you, ask your city's animal control office directly.
Two Colorado rules that do apply to dogs in vehicles are worth knowing. The hot-car statute, C.R.S. 13-21-108.4, protects a person who breaks into a locked vehicle to rescue an animal in imminent danger after calling 911 and meeting the other conditions; a truck bed under a tonneau cover in July is as dangerous as a cab. And the Forest Service's Mount Blue Sky Recreation Area prohibits leaving pets in vehicles at all. Colorado Parks and Wildlife's leash rule exempts animals confined in a vehicle, which assumes the animal is, in fact, confined.
Our position. Legal or not, a loose dog in an open bed is the most dangerous way to carry one. Canyon roads to Golden Gate Canyon, Stevens Gulch, the Quandary trailhead and Guanella Pass are steep, winding, washboarded and full of sudden stops for wildlife. A dog can be thrown by a swerve, jump at a deer, or be hit by gravel and debris. Tethering a loose dog by the collar in a bed is worse, not better; a dog that goes over the side on a collar tether is hanged. If the dog rides in the bed, it rides in a secured crate.
Securing a crate in a truck bed
- Anchor the crate to the bed, not the dog to the crate. Ratchet straps through the crate's tie-down points to the bed anchors, front and rear, so the crate cannot slide, tip or lift. A crate held by friction and a bungee is a projectile.
- Put it against the cab, out of the slipstream and where the ride is smoothest.
- Shade and airflow. A dark plastic or metal crate in direct sun becomes an oven in minutes, and a bed under a tonneau or topper with no airflow is worse. Insulated crates, a reflective cover, a shaded parking spot and short stops are the minimum; see cooling vests for Front Range summers for the heat picture.
- Cold and wind. At highway speed in January the wind chill in an open bed is savage. A topper or an insulated crate with a wind-blocking door panel is the difference between a cold dog and a hypothermic one.
- Dust and gravel. Forest roads such as the drive into Stevens Gulch or the washboard above Golden Gate Canyon fill an open bed with dust. A crate with solid sides and a filtered or covered door spares the dog's eyes and lungs.
- Stop and check every hour, and every time you leave pavement.
Hitch-mounted carriers
Platform carriers that slot into a receiver hitch and hold a crate behind the bumper exist, and we do not recommend them for dogs. The crate sits in the exhaust plume, collects road spray and gravel, and is the first thing hit in a rear-end collision. The wiring for lights is usually an afterthought. If the cab and bed are both full, the honest options are a second vehicle or leaving the dog home.
Judging a crash-tested crate
"Crash-tested" on a box means nothing on its own; "crash-test certified" by an independent body means a specific crate, in a specific size, held together and stayed anchored under a defined test. The Center for Pet Safety, a non-profit that publishes its protocols and results, is the usual reference in the United States; ask any maker which independent body tested which models, and in what sizes, because a 25-pound dummy tells you little about a 90-pound dog. Then compare features:
| Feature | What to look for |
|---|---|
| Construction | Double-wall rotomoulded plastic or welded aluminium; no thin single-wall shells or wire |
| Door and latches | A door that cannot pop under impact or be pawed open; latches that lock, hinges that are through-bolted |
| Tie-down points | Reinforced, structural, at least four, rated for straps, not moulded loops that tear |
| Ventilation | Generous, but with a way to cover openings against wind, dust and sun |
| Size | Big enough to stand, turn and lie flat; not so big the dog is thrown around inside. Measure the dog, not the bed |
| Escape hatch | A second door or roof hatch so you can reach the dog if the main door is blocked in a rollover |
| Drainage and cleaning | A floor you can hose out; a wet dog after Lair o' the Bear is the normal state |
| Weight | Heavy is fine when it is strapped down; it is a problem when you have to lift it |
In the cab instead
For most dogs and most trucks, the back seat is better than the bed: climate control, no wind, a crate or a crash-tested harness clipped to the belt anchors. The same independent-certification question applies to harnesses, and most sold as "car harnesses" have never been tested. A dog on a lap, in the front seat or free to climb on the driver is a hazard on any road and a serious one on the switchbacks to Golden Gate Canyon or White Ranch.
Crate training is the other half
A dog that panics in a crate will panic in a moving one. Build the habit at home first; a trainer can help with a dog that already hates it, and free training quotes in Denver or Boulder cost nothing to request. For the trailheads where the drive is the hard part, read dog-friendly 14ers, and for the parking-and-shuttle system that keeps most vehicles off the Quandary road in summer, the trail page has the details; dogs ride the Breckenridge shuttle free.