Cephalorhynchus heavisidii preys upon a number of different fish and cephalopods. Although this species is not a major prey item of any particular organism, body parts of dolphins have been found in the gut contents of killer whales and sharks. There is no information available regarding parasites of Cephalorhynchus heavisidii, nor has it been recorded to take part in any mutualistic or commensalistic relationships with other organisms.
- Ellis, E., A. Poor. 2006. "Order Cetacea" (On-line). Animal Diversity Web. Accessed March 14, 2011 at http://animaldiversity.ummz.umich.edu/site/accounts/information/Cetacea.html.
- Wursig, B., M. Wursig. 2010. The dusky dolphin: master acrobat off different shores. United States of America: Academic Press. Accessed March 14, 2011 at http://books.google.com/books?id=KudBOfRXjWAC&pg=PA67&lpg=PA67&dq=dolphin+parasitic+relationship&source=bl&ots=uKBkne65bn&sig=-6asxrXN7a3cEv0_LSU5CQ36JhA&hl=en&ei=HJ59TdvyHcnprAGGv_jCBQ&sa=X&oi=book_result&ct=result&resnum=1&ved=0CBgQ6AEwAA#v=onepage&q&f=false.