Weight class: Your dog's size determines the available provider pool
The single most important variable when you search for a dog aftercare provider is your dog's weight. Small dogs — Chihuahuas, toy poodles, terriers under 25 pounds — are accommodated by virtually every pet cremation facility. Large and giant breeds — Labs, Great Danes, Mastiffs — need confirmed chamber capacity and a facility that can name its maximum weight rating without hesitation. A provider that says “we handle large dogs” should be able to cite the specific weight limit of each chamber. If they cannot supply a number, you are probably talking to a facility whose equipment maxes out below your dog's weight class.
Weight tiers also drive pricing. Providers commonly bracket dogs into small (under 30 lbs), mid-size (30–75 lbs), large (75–100+ lbs), and giant. Confirm which bracket your dog falls into before you commit — moving from mid-size to large can change the quote meaningfully. Giant breeds like Mastiffs and Saint Bernards occupy more chamber capacity, more energy, and more cooling time, all of which appear on the invoice as a higher cremation line. Dense-boned breeds — Bulldogs, Rottweilers, Cane Corsos — may trigger a higher tier even at the same weight as a lighter-boned sporting breed. Ask about this.
Urn sizing follows weight closely. The common rule is about one cubic inch per pound. Dense-boned breeds need slightly more. A 90-pound Labrador needs roughly 90–100 cubic inches. A 12-pound Jack Russell needs roughly 12–15. Buying the wrong size means either leaving ashes in a temporary container or wasting money on empty vessel space.

