Coal shows up 58 times in the registries at rank 1735, strongly male. This is a color-descriptive name at its most direct — coal is matte black, intensely dark, the color of a pet whose coat absorbs light rather than reflecting it. No mythology, no pop-culture reference needed: the name is a pure visual description.
The Color-Name Tradition
Coal joins Midnight, Shadow, and Onyx in the vocabulary of black-coat pet names — but it occupies a different register than any of them. Where Midnight is romantic and Shadow is mysterious, Coal is industrial and tactile. It suggests a dog that's solid, heavy, earth-connected rather than ethereal. The name is more working-class than aristocratic, which many owners find refreshing.
Breed Fit
Coal is at its best on large, solid-black breeds: Labrador Retrievers, Black German Shepherds, Scottish Terriers, and black-coated mixed breeds. The name-appearance coherence is the primary appeal. Browse Labrador Retriever names for the full range of black-coat naming options. Scottish Terriers are a particularly natural fit given the breed's mining-country heritage.
Counter-Reading
Coal carries associations with fossil fuels and environmental degradation that some owners may find mildly uncomfortable in 2025. It's a stretch to read that into a pet's name, and most people won't — but if you're in a particularly eco-conscious social circle, the association might come up. The name is too visually logical to abandon over this.