The Otterhound's large size makes car travel a matter of thoughtful planning rather than simply opening a door and letting the dog hop in. Most Otterhounds weigh between 80 and 115 pounds and stand over two feet tall at the shoulder, which means they require substantial cargo space. SUVs, minivans, and station wagons are generally the most practical vehicles for transporting an Otterhound, and many owners find that a dedicated cargo area with a protective liner becomes essential equipment.
Securing your Otterhound during car travel is both a safety consideration and, in many jurisdictions, a legal requirement. A crash-tested crate sized for a large hound is the safest option, though the crate dimensions needed for an Otterhound may require a vehicle with considerable cargo depth. Alternatively, a heavy-duty car harness designed for large breeds can restrain the dog while allowing some freedom of movement. Unsecured dogs in moving vehicles pose a serious risk to themselves and to human passengers in the event of a sudden stop or collision.
Otterhounds are generally good travelers once they are accustomed to the car, but their heavy double coat means they are prone to overheating in warm weather. Air conditioning should be running before the dog enters the vehicle, and owners should never leave an Otterhound unattended in a parked car, even for short periods. The breed's thick, oily coat retains heat efficiently, making them more vulnerable to heatstroke than many other breeds of similar size.
For longer road trips, plan regular stops every two to three hours to allow your Otterhound to stretch, relieve itself, and drink water. The breed's strong nose and natural curiosity mean that rest stops should always involve a secure leash, as an Otterhound that catches an interesting scent can become single-minded in its pursuit and difficult to recall.