K9 TailSaver Sizing Guide: Find Your Perfect Fit

Find Your Dog’s Size

Enter your dog’s weight and back length below. The tool will recommend a specific size in seconds.

Interactive Size Finder

How to Measure Your Dog

1
Weight

Current body weight in pounds. If your dog is between sizes, size up.

2
Back length

Soft tape measure, base of neck to base of tail (where the tail meets the body).

How to measure your dog's back length for the K9 TailSaver

Visual Size Chart

K9 TailSaver size chart

Size by Breed

A quick starting point — use the tool above for your dog’s exact measurements.

  • American Staffordshire Terrier — 20–38 lb S, 38–58 M, 58–95 L, 95+ Custom
  • Anatolian Shepherd — 20–35 S, 35–60 M, 60–80 L, 80–90 L-Plus, 90–120 XL
  • Australian Shepherd / Cattle Dog — 20–38 lb S, 38–60 M, 60–90 L
  • Basset — 20–40 lb S, 40–58 M
  • Beagle — 20–40 lb S, 40–50 lb M
  • Beauceron — 20–38 lb S, 38–58 M, 58–100 L
  • Belgian Malinois — 20–38 lb S, 38–60 M, 60–100 L
  • Bernese Mountain Dog — 58–80 L, 80–98 lb L-Plus, 98–115 XL, 115–150 XXL
  • Border Collie — 40–55 lb M, 55–80 lb L
  • Boxer — 40–60 lb M, 60–100 lb L
  • Bulldog — 40–60 M, 60–95 lb L, 100+ Custom
  • Bullmastiff — 58–80 L, 80–90 lb L-Plus, 90–115 XL, 115–150 XXL
  • Cane Corso — 20–38 lb S, 38–58 M, 58–100 L
  • Cocker Spaniel — 20–38 lb S, 38–58 M
  • Dachshund — 15–20 XS, 20–38 lb S
  • Dalmatian — 20–38 lb S, 38–58 M
  • German Shepherd — 35–65 M, 65–75 L, 75–85 L-Plus, 90–125 XL
  • Golden Retriever — 20–38 lb S, 38–58 M, 58–100 L
  • Great Dane — 40–60 M, 60–90 L, 90–115 XL, 115+ XXL
  • Great Pyrenees — 58–80 L, 80–90 lb L-Plus, 90–115 XL, 115–150 XXL
  • Greyhound — 65–80 L-Plus, 80–110 XL
  • Husky — 60–90 L (order Custom, note breed/weight & fluffy tail)
  • Irish Wolfhound — 80–95 XL, 95–115 XXL, 115–200 XXL Plus (3XL)
  • Labrador — 38–55 lb M, 55–90 lb L
  • Mastiff — 58–80 L, 80–90 L-Plus, 90–115 XL, 115–150 XXL
  • Newfoundland — 58–80 L, 80–98 L-Plus, 98–115 XL, 115–150 XXL
  • Pitbull — 20–38 lb S, 38–58 M, 58–95 L, 95–100 Custom
  • Poodle & Mixes — 20–38 lb S, 38–58 M, 58–95 L
  • Saint Bernard — 58–85 L, 85–90 L-Plus, 90–115 XL, 115–150 XXL
  • Shetland Sheepdog — 20–38 lb S, 38–58 M
  • Whippet — 40–58 lb M, 58–85 lb L
Still not sure? We’ll help you pick the right size.

Email support@happytailsaver.com or call +1 331-725-1098 with your dog’s breed and weight.

STRAPS

Blue & Red: Remove slack but ensure undertail comfort; feel for a gentle fit. Back-thread these straps.

Green: Route from right hip, under chest (not belly), to left hip.

Yellow: Center over tail using loops (1/3 from top); pass both ends between hind legs.

Buckles: Anchor in loops (2" from top) and meet over hips. Keep away from thighs/tail and leave some slack.

Fit & Safety:Limit tail lift to 45° (hip-height lift causes sleeve loss).Avoid tightness under the tail to prevent chewing; check daily.Use a cone for 2 days during adjustment. Text photos for help!