Animal behaviour is an important field of study, not all research needs to be about building better nukes or finding new cures for ED.
By understanding other animals we learn about our own species too.
We have tremendous genetic overlap with these animals.
https://humanorigins.si.edu/evidence/genetics
Background:
Comparative Psychology and Ethology are both sciences which study animal behavior, typically non-human behavior, though both have often studied humans.
Comparative Psychology is a sub-discipline of psychology, and Ethology* (is a sub-discipline) of biology. Both can trace their roots to the late 19th century.
https://www.apadivisions.org/division-6/publications/newsletters/neuroscientist/2010/11/historian-column
*(Ethology not to be confused with ecology or ethnology).