nalvidysince lujvo

x1 is a non-venomous snake of species/breed x2

See also since, vidysince, kolburi, pitxona, jboia, sincrboua, anrkonda

In notes:

anrkonda
x1 is an anaconda of species/genus x2
kolburi
x1 is a colubrid of species/breed x2.
vidysince
x1 is a venomous snake of species/breed x2