Meh. It’s prob pic OP’s cacti. Especially taking the grass background. I have these in my yard, from taking overgrowth pickings from my parents yard. I have to cut them back a couple times a year to keep them from over growing their boundaries or getting fat woody trunks.
In general though, yes. Don’t mess with natural flora and fauna.
In the US, may want to wait until Halloween is over. Many shelters won’t allow them for a period of time due to high return rate or risk of abuse. Btw, void kitties are some of the best kitties!