Miniature American Shepherd: crate, bed and harness size
AKC weight: 20-40 pounds (AKC Breed Weight Chart). The Miniature American Shepherd is #28 in AKC's 2025 ranking (AKC).
Crate: 30" crate (MidWest iCrate Dog Crate Size Guide (manufacturer PDF))
Bed: Small rectangle bed (28 x 18 in) (Orvis Dog Product Sizing Guide (Rectangle bed))
Harness: Measure your dog's chest girth, then check the Ruffwear girth chart. No breed standard lists girth.
Photo: Lextergrace, CC BY-SA 4.0, via Wikimedia Commons (cropped).