Andrew R. Deans of Pennsylvania State University and colleagues published an article:
Diversity and complexity of arthropod references in haiku. It displays the degree to which the insect world appears in human expression through haiku.
Shorewick, as a result, was led to determine how many animals and plants were, in his book cited above, referenced in his haiku about his pictures of rustic Pennsylvania.
Here is the list
Animals:
Serpent
Owl
Frog
Hog
Egg (no reference to sperm)
Lion
Pigs
Hippopotamus
Horse
Fish
Pollock
Minnow
Birds
Egrets
Dinosaur
Fossils (assuming they are animal in origin)
Turtle
Vole
Snail
Deer
Insects
Reptile
Cat
Porcupine
Termite
Starlings
Worms
For whatever reason, Shorewick is very sparse in his calling for plants and fungus into his work.
Here is the rather short list of such plant based and fungal creations which he mentions in that work about rustic Pennsylvania
Plants and Fungi:
Moss
Leaves
Trees
Vines
Fungal (used as an adjective)
Mushrooms
Banyam
Sod
To conclude, it would be of much interest to determine how other biota, cultures, geological and historical phases have featured in haiku, and perhaps, in other artistic genres.
T. M. Shorewick 