Companions Rest Memorials

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Urn Size Guide

Our guide to help you select the correct size urn for your pet companion.

The recommended rule is you will need at least 1 cubic inch for each pound that the animal weighs.

For example, pet companion that weighs 20 pounds will need an urn with a capacity of at least 20 cubic inches, however, it is strongly recommended to have extra space in the urn – just to err on the side of caution and make sure the ashes are contained properly.

Adding 10 cubic inches more is a good way to be sure that the pet urn will be large enough to hold the animal’s ashes. Therefor, if your dog weighs 20 pounds, shop for dog urns with 30 cubic inches of capacity or more.

Pet Animal Weight (lbs) Weight (kgs) Minimum Urn Capacity
Hampster
< 1 lbs
< 0.4 kg
1-2 cu.in
Gerbil
< 1 lbs
< 0.4 kg
1-2 cu.in
Guinea Pig
1 - 2.5 lbs
0.5 to 1 kg
1-5 cu.in
Birds
<1 lb to 3 lbs
0.4 - 5 kg
5 cu.in.
Small lizard
< 1 lbs
< 0.4 kg
1-5 cu.in
Large lizard
10-20 lbs
~5-10 kg
20-30 cu.in
Ferret
2.5 lbs
~1 kg
5-10 cu.in
Small Domestic Cat
10 lbs
4 kg
20 cu.in
Large Domestic Cat
up to 20 lbs
up to 8 kg
30 cu.in
Small Dog
up to 25 lbs
up to 10 kg
35 cu.in.
Medium Sized Dog
50-75 lbs
10 kg
85 cu.in.
Large Sized Dog
75-100 lbs
34-45 kg
120 cu.in.
Extra Large Sized Dog
100-150 lbs
45-68 kg
110-160 cu.in

Average Weight of Dogs by Breed

  • Labrador Retriever | 65-80 lbs. | 65 – 80 c.i.
  • German Shepherd Dog | 75-95 lbs. | 75 – 95 c.i.
  • Yorkshire Terrier | Less than 7 lbs. | 5 c.i.
  • Golden Retriever | 65-75 lbs. | 65 – 75 c.i.
  • Beagle | 18-30 lbs. | 18 – 30 c.i.
  • Boxers | 50-75 lbs. | 50 – 75 c.i.
  • Bulldogs | 40-50 lbs. | 40 – 50 c.i.
  • Dachshunds Mini | 8-10 lbs. | 8 – 10 c.i.
  • Poodles Mini | 11-17 lbs. | 11 – 17 c.i.
  • Shih tzus | 8-16 lbs. | 8 – 16 c.i.

Average Weight of Cats by Breed

  • Domestic Cat | 8-10 lbs. | 8 – 10 c.i.
  • Persian | 7-12 lbs. | 7 – 12 c.i.
  • Siamese | 5-10 lbs. | 5 – 10 c.i.
  • Maine Coon | 10-25 lbs. | 10 – 25 c.i.

Splitting Ashes between Family Members

If a cat or dog was loved by more than one person in the family, it can be a great idea to split the ashes so each person has their own special pet keepsake. View our Keepsake Cat and Dog Urns.

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