Proto-Slavic *kozьlъ

→ Belarusian казёл (inherited)

→ Bulgarian козел (inherited)

→ Czech kozel (inherited)

→ Kashubian kòzeł (inherited)

→ Old Church Slavonic козьлъ (inherited)

→ Old Church Slavonic козьлѧ (derived)

→ Lower Sorbian kózoł (inherited)

→ Hungarian kazal (derived)

→ Polish kozioł (inherited)

→ Russian козёл (inherited)

→ Slovene kozel (inherited)

→ Ukrainian козел (inherited)