Does anyone know what type of plant this is?

This is either one of the cultivars of English Ivy (Hedera helix, usually an outdoor plant) or Natal Ivy/Cape Ivy (Senecio macroglossus) which resembles it, but which usually has variegated leaves, but some with solid green leaves do exist. Although the second plant named resembles an ivy, it's a member of the daisy family (Asteraceae). The leaves of both can be highly variable in shape, so it's difficult to say which yours is without a flower to identify. Fortunately, both are relatively hardy plants that don't require much in the way of special care, but if this is Hedera helix, it can be prone to plant pests. Hedera helix care: http://www.flowershopnetwork.com/flower-pictures/pl02802/english-ivy-planthedera-helix/ Senecio macroglossus care: http://www.plantcare.com/encyclopedia/cape-ivy-1131.aspx - shows a photo of the variegated variety

Hedera helix how to guide http://www.ehow.co.uk/how_2060479_care-english-ivy.html?cr=1 hope this helps