The minimum size required is determined by the weight of your pet. The urn needs to be large enough to provide 1 cubic inch of capacity for each pound of healthy live weight. We can not guarantee that the minimum size will be adequate fro the cremains of your pet. It is better to purchase an urn with extra capacity above the minimum required.
How is the lid held in place?
The urn features hand chased threads so the lid screws into a collar in the body of the urn. This provides a solid and secure closure.