“…Different type of enrichment materials have been studied such as different types of wood (Pincz et al, 2007;Pincz et al, 2008a and b;Zucca et al, 2012), hay (Lidfors, 1997;Berthelsen and Hansen, 1999;Maertens and Van Oeckel, 2001), grass cubes (Lidfors, 1997), straw Pol et al, 2006), grass and coarse mix feeds (Leslie et al, 2004), a variety of food items (Brown, 2009), metal can (Brooks et al, 1993;Lopez et al, 2003), bunny stick, bunny block, nylon rod, kong (Harris et al, 2001), parrot toys, copper wire ball (Huls et al, 1991), card board rings and balls, rubber ball (Poggiagliolmi et al, 2011), stainless steel rabbit rattle on spring clips (Johnson et al, 2003) and basal components, wood mash and chicory pulp (Maertens et al, 2013). These studies showed that rabbits prefer food-related items over non-food related items and that enrichment materials increased chewing and reduced stereotypies as well as skin lesions (especially on the ears) (Princz et al, 2009).…”