Having owned a dog, I would say this Dog Vomit Slime Mold (Fuligo septica) is aptly named! It’s also known as Scrambled Egg Slime (yuck!).
Dog Vomit Slime Mold often appears on bark mulch in urban settings and I’ve seen it before. We haven’t had much rain lately, but we have had some mornings with heavy fog, which apparently has moistened my woodchip pathways well.
This slime mold appears quickly and then within a few hours changes from its bright yellow color to brown. Here’s one after a couple of days.

These growths generally don’t do any damage, so there’s really no need to remove them since they’re hidden behind the house. It’s just another interesting part of nature.


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