Yes they do sometimes. My practice is not generally vegan or vegetarian even though some of the deities I align with prefer plant based or mostly plant based food, mineral, or liquid offerings. There is no way that I can guarantee that your working would not involve some animal products or that the recommended ebo would not involve animal sacrifice, especially if it has anything to do with the Ancestors or warring aspects of deities. These would at least involve offerings of meat.
African spirituality is very Nature accepting. We are omnivores in a cycle. We eat other plants and animals, and eventually plants and animals will eat us, and thank the Gods they do. Some animals are eating us already so that we don’t suffocate in our own dead skin or the less friendly bugs that would eat us alive unmitigated.
The issue for some people is the act of purposefully ending a life with one’s own hands or weapons. For some, this crosses a line that I can understand not everyone is comfortable with. If you need a root worker who does not eat animals back, I am not the one you seek.