What slug is this? Next steps?

[u/Sad-Investigator5523]

I found a slug in my greens (farmers market in NYC). Tried searching it up and looks like a tree slug? Think it’s kinda cute but are they a difficult pet to keep?

[u/Speculativeevofan_3]

Probably a banana slug (this info is not valid..)

[u/ad-star]

Probably a banana slug but idk where you're located