In my mind reptiles are different. (now all reptiles and animals have
a purpose) but......
It would not bother me a lot if someone else killed a venomous snake.
(I do not think I could do it.)
As for animals, my feelings are different.
If you move to an area where we infringe on their habitat than you
just have to expect your animal getting killed goes along with the territory.
(it is up to us to keep that pet inside the house when alone)
Unfortunately as humans keep moving up into the hills/their
habitats the animals start coming down into the city to survive.

(now if the animal was actually attacking my pet, I would try to
save my pet no matter what.)