The amount of space dogs need depends on their size. Large breeds require more room than small dogs.  

Indoors, dogs need enough room to stand, sit, lie down, and turn around comfortably. Provide proper sized crates.

Dogs kept outdoors need an enclosed, shaded area with shelter. The space should allow exercising and play.

High energy dogs like retrievers need larger spaces for exercise and play. Space for walks is also important.

Kennel requirements vary by locality. But adequate room for movement and socialization is essential.

Dogs should have separate resting and sleeping areas with clean, dry bedding and space to stretch out.