Where does “pes” come from?

pes (Old Church Slavonic) comes from Proto-Slavic pьsъ, from Proto-Balto-Slavic píśas.

Ancestry of “pes”, step by step

StepLanguageWordMeaning
1Proto-Slavicpьsъdog
2Proto-Balto-Slavicpíśas—

Words derived from “pes”

Every word from Proto-Balto-Slavic píśas →Every word from Proto-Slavic pьsъ →
pes — Etymology, Origin & Word History | Etymology Explorer