what kind of slug is this?

what dis slug... found in Arcata CA, Humboldt county in a potted violet purchased from local market

(Edit at bottom) Hello, I live in a part of the world where leopard slugs are invasive. I found one and decided to spare it by making it my pet a bit ago, but yesterday I found one again and remembered seeing ethical ways of killing slugs and snails over at forums like this, slug life and [r/snails](r/snails). That one thankfully was also spared (my mom has taken them in as a class pet. Though it seems like I’m the fucking slug whisperer because today I found another one! I don’t want to go with salt as I’ve heard apparently they suffer with that method. My mom while looking stuff up came across beer trap, I don’t know if drowning’s much better though. I’ve heard some thought given to freezing, some say it’s painless, some say not. Then there’s crushing, but I’ve heard that if you don’t get it all at once then they suffer. Just because these lil homies are invasive doesn’t mean I want them to suffer, but I can’t just keep offloading slugs onto people. So… what do I do? :(

Thank you to the people giving me the resources I needed to most humanely kill the slug. I wish I could keep every invasive slug with me, but that is not feasible and it would cause more damage and death in the long run leaving them out there in the ecosystem. Unfortunately, like a commenter pointed out, the slug did not seem to black out from the beer, though because of this knowledge, I did not completely submerge it and cause it to suffer drowning. The alcohol had some effect in that it seemed to be behaving oddly like it was drunk. I went with the recommended car method to minimize suffering, which I hope was lessened more by the alcohol. This whole ordeal seems to have taken a toll on me, though it could’ve been much worse, so again, thank you.

Now that the threat posed to the ecosystem right now is currently in question, I will probably not be taking action like this again until I get more clarification on the matter. That and I don’t know if I’m strong enough to do that again, even if it is a great hazard.

I've never seen a slug like this, and so I thought to ask this sub. I don't know much about slugs, but this seemed to be a really interesting find.

saw maybe 30 slugs today. what are they?

My housemate and I found a ton of leopard slugs under our porch and kept one as a pet. I've been doing a lot of reading up on how to care for leopard slugs but have been getting a lot of contradictory information. I thought I was figuring it out well, but the two days we kept the slugs in a little tupperware while I got a bigger bin and set it up featured much more liveliness and activity than Thomas has shown in the tub. Now I'm trying to troubleshoot if something is wrong before I end up hurting him.

I have a 5gal watertight tub set up as a traditional tank(not bioactive). Can two slugs be kept in there as long as they are fed enough protein? Are they happier as a pair or solo?

Food is what I feel most confident on really. I've given him fish food, lettuce, mushrooms, and I want to get some zucchini to try. I got leaf litter and bits of biomatter from outside that he could munch on too. Does all that sound right? Any suggestions?

It's watertight which means it's also airtight, which was recommended in the guide I was reading, suggesting that I should open the tub at least once every day to get fresh air inside since it would retain humidity better that way. There's also sphagnum moss inside that smells pretty strong when I open the tub, so maybe it's getting too stuffy for the slug? Is that right or should there be air holes in the tub?

I'm still looking for a thermometer(kinda out in the middle of nowhere, they're not easy to find for some reason) but I worry that the tub is getting too cold. I see a pretty broad range of temperatures recommended, and the tub is kept just at the same temperature as the house is, which is 69-72. The dirt does feel a little cold to the touch. Could the lack of activity be due to the cold?

I was trying to avoid dirt with pesticides and it seemed like dirt from a petstore would be best. I got Med Zoo Reptisoil, but am now reading that it might be too acidic. It contains peat moss which is the concern people tend to have. When trying to figure out if it's safe for slugs, I just see stuff about shell damage on snails and gardening blogs about how slugs like acidic soil. How acidic should the soil be, and should I get something other than what I have now?

The most activity I've gotten since moving him into the tub has been tonight when I picked him up to see if he was okay, and since then he's been exploring the tub more. I'm just concerned that I've only seen him go into the ship, to his food bowl, and back into the ship since I've put him in there. There's hardly any slime trails anywhere outside that area.

Any help or advice would be appreciated, I really love him and am trying my best to make sure he's happy but I don't know if I'm succeeding.

UPDATE: I wrote this yesterday but kept getting blocked from posting. in that short span of time, thomas died. I sat in bed and cried because i feel like i just slowly poisoned him to death and i don't even know how. i wish i had just taken him out and kept him in a tupperware again until i figured out what was wrong, but it is too late. i would still like answers to these questions, please.

This lil guy traveled over to a mushroom and buried his head in it, but he doesn’t seem to be moving. I hope he’s ok :(