There are several species of ivy (Hedera). The leaves that are illustrated are from Common Ivy (Hedera helix), which is often seen climbing over walls, and trees. It is an important plant for wildlife as it provides food and shelter. The berries are popular with birds. In humans, Hedera species can cause gastrointestinal upset when ingested. Where there is significant or prolonged skin contact, ivy can cause both irritant and allergic contact dermatitis. It is a plant to avoid although it will not matter if a few leaves make it into the forage bag.