The 8 animal names are for the 8 different finger patterns possible on most string instruments.
There are four sets of opposites:
2-crab, hermit crab
4-spider, inch worm
See the bottom booklet for musical descriptions.
The use of patterns enables string players at all levels to increase their ability to learn and perform quickly passages would be otherwise harder to execute. The benefits are extraordinary in clarifying passage work. It gives a system to understanding the sets and subsets of patterns in use while performing and learning a passage.
If interested these designed patterns of animals by Orin Stuckenbruck placed one 1 cm square stamps can be used to stamp of the passages being studied. The stamps can be ordered by sending me a message below.