Dog vomit slime mold

Dog vomit slime mold is the common name for *Fuligo septica*, a species of slime mold known for its bright yellow, foamy appearance.

Dog vomit slime mold is the common name for Fuligo septica, a species of slime mold known for its bright yellow, foamy appearance. Despite its name, it is not caused by dogs or vomit, and it is not a true fungus; it is a fungus-like organism in the slime molds. This organism is generally harmless and commonly appears on decaying organic matter in moist, shady areas, including in Canadian gardens and woodlands.

Taxonomy and classification

Dog vomit slime mold is the species Fuligo septica. Sources describe it as a slime mold in the myxomycetes, and note that it is not a true fungus but a fungus-like organism.

Appearance and life cycle

It is usually seen as a yellow, tan, or whitish foamy or fluffy mass that later becomes dry, crusty, and darker before releasing spores. The common names refer to its egg-like or vomit-like look.

Habitat and ecology

The species is commonly found in moist, shady places, especially on mulch, rotting wood, and leaf litter. It feeds on decaying organic matter and other small organisms, acting as a decomposer in its environment.

Human and garden impact

Dog vomit slime mold is generally considered harmless and mainly a cosmetic nuisance in gardens. It does not usually damage plants, but its spores may bother people with allergies or asthma.

Distribution and notes

It is described as widespread or found worldwide in garden and woodland settings. Some sources mention that it has been reported as edible in Mexico, but it is generally listed as not edible in garden references.