Observational Frontiers in Dwarf Galaxies: Diversity on the Smallest Galactic Scales

Low-mass dwarf galaxies provide a unique laboratory for probing dark matter and galaxy formation on the smallest galactic scales. Owing to their low luminosities and diffuse structures, observational studies have historically been limited largely to dwarf galaxies within the Local Group (D < 3 Mpc). In this talk, I will present recent observational results on low-mass galaxies in the nearby Universe, revealing remarkable diversity and raising new astrophysical puzzles. I will discuss the connection between dwarf galaxies and their host dark matter halos, as well as the wide range of dwarf galaxy properties, including their dark matter content, globular cluster populations, and structural scaling relations. These discoveries include extreme systems such as diffuse galaxies with unusual dark matter properties and size--mass outliers that challenge current models of galaxy formation. I will conclude with ongoing and future surveys critical to mapping the broader population and properties of low-mass galaxies.