outdoor dog; dog kept outdoors
Refers to a dog that lives primarily outside the house, as opposed to an indoor dog (室内犬). Often used in discussions about pet care or housing.
See also: 室内犬
You can keep an outdoor dog in this apartment building.
室外犬は室内犬より寒さに強い品種が多い。
Many outdoor dog breeds are more cold-resistant than indoor dogs.