I feel like I've become pretty good at identifying poison ivy. I can distinguish it from the 5 leaves of Virginia creeper, wild raspberry, and other 3 leaved plants (a friend freaked out because I touched a jack in the pulpit plant with 3 leaves... I know not all 3 leaved plants are PI). I know those mitten shaped leaves well and know they sometimes don't have mittens but other irregularities in shape. Overall I have felt pretty confident in being able to ID it.
However, some neighbors have informed me that poison ivy can have 5 leaves sometimes... I thought they must have been getting it confused with virginia creeper but they said no, that's why they are scared to pull VC, because PI sometimes has 5 leaves. I've never heard this before and couldn't find anything online to back that up, so figured I'd ask here. I've always looked for 3 leaves! Is it true that PI can have 5? This was coming from 3 different neighbors, one of which is a very well seasoned gardener.