Columbia

Small flock dry-lot + shed

0.5 ac dry-lot for 4–5 head + 3-sided shed

Sheep are obligate herd animals — keep at least 2–3, never solo. A half-acre dry-lot with daily hay, fresh water, mineral access, and an open-front 3-sided shed for shade and weather. Perimeter must be predator-proof (sturdy woven wire or electric net).

Rotational pasture

≈ 1 ac per 2–3 sheep, rotated paddocks

Rotate the flock across 2–4 paddocks to break parasite cycles and keep forage healthy. Provide a windbreak/shelter, free-choice minerals, clean water, and a guardian (LGD) or strong perimeter fencing against coyotes and dogs.

Managed pasture + LGD

Managed rotation, LGD, full hoof/shear program

Large managed pasture rotation with a livestock guardian dog, scheduled hoof trimming, shearing once or twice a year, and parasite monitoring (FAMACHA). Lambing barn or jug space available in season. Columbia is a dual-purpose range breed (meat + medium wool) developed for western U.S. rangelands — adapted to extensive managed pasture.

Newborn mammals are nursed on their mother's milk. Many are born helpless — blind, deaf, and sparsely furred (altricial, as in dogs, cats, and rodents) — while others stand and follow within hours (precocial, as in hoofed livestock).

After weaning, juveniles grow quickly and become increasingly active, playful, and independent. Adult coat, proportions, and (in many species) the permanent teeth come in as they approach full size.

Adults reach full body size and sexual maturity, with the species' mature coat and build. Sexual dimorphism — differences in size, mane, horns, or markings — is pronounced in some mammals and subtle in others.

Senior animals show aging signs such as graying fur, reduced activity, and a greater need for veterinary monitoring of joints, teeth, and organ function. Lifespan and the onset of old age vary widely by species and size.