Does anyone know what other animals resemble woodpeckers that live in symbiosis with trees?

What you want to ask about is "mutual benefit and symbiosis", because the two sides of symbiosis cannot survive without each other. Symbiosis with microorganisms is the most common symbiotic relationship.

For example, lichens, a symbiont of fungi and bryophytes, lichens rely on the mycelium of fungi to absorb nutrients, and bryophytes rely on photosynthesis to produce organic matter. There is also the relationship between termites and intestinal flagellates, which is also a mutually beneficial symbiotic relationship. Termites feed on wood, but they cannot digest cellulose on their own, and must rely on the enzymes secreted by the flagellates in the intestines to digest cellulose in order to break down cellulose and the decomposed product can be used by both parties.

There is also the soybean we eat, which has a symbiotic relationship with rhizobia, which is surrounded by the invasion line formed by the plasma membrane of the host and synthesizes nitrogenase within the host. Legumin, on the other hand, is a product of symbiotic action, specifically, plants produce globulin, while heme is synthesized by bacteria. Legahemoglobin is present in the vacuoles of plant cells and has a strong affinity for oxygen, so it is advantageous for creating the anaerobic conditions necessary for nitrogen fixation.

And so the bacteria begin to fix nitrogen. In plants, bacteria depend on plants for energy, while bacteria can only fix nitrogen and cannot use the fixed nitrogen. Therefore, leguminous plants supply rhizobia carbohydrates, and rhizobia supply plant nitrogen nutrients, thus forming a mutually beneficial symbiotic relationship.

Others include the symbiosis of ruminants such as cattle and sheep with rumen microorganisms, and the symbiosis of humans and intestinal flora.

There are relatively few examples of symbiosis between higher beings, such as clownfish and anemones in Finding Nemo.

Rhino and rhino birds, crocodiles and crocodile birds, woodpeckers and trees, sea anemones and hermit crabs, soybeans and rhizobia termites and intestinal flagellates Ruminants such as cattle and sheep with rumen microorganisms, ants and aphids

The ring-tailed lemur (scientific name: Lemur catta) belongs to the primitive primate family, with a long snout and lateral eyes that resemble a fox, and is named after the tail link markings. More than 5-20 groups of people, inhabiting dry areas with many rocks and few trees, each with its own territory.

Good at jumping and climbing, it is a lemur with strong terrestrial habitat, and its staple food is insects and fruits.

Ants