“…Research has shown a wide range of positive effects to enriching laboratory rats' environment including behavioural (Kaliste et al, 2006;Zaias et al, 2008;Abou-Ismail et al, 2010;Lidfors et al, 2014), physiological (Eckert et al, 2010;Azar et al, 2012;Sharp et al, 2014), psychological (Chamove, 1989b;Patterson-Kane et al, 1999), developmental (Mirmiran et al, 1982;Kempermann et al, 1997;van Praag et al, 2000), therapeutic and recovery from neural deficits (Jenks et al, 2013;Darwish et al, 2014;Greifzu et al, 2014) cognitive ability and memory, (Harris et al, 2008;Lyst et al, 2012;Jenks et al, 2013) and physical growth and functions and development of the brain (Nithianantharajah and Hannan, 2006;de Carvalho et al, 2010;Eckert et al, 2010;Skillings et al, 2014). Moreover, it has been shown that animals exposed to human and environmental enrichment (novel objects) early in life were easier to handle, less sensitive to novel situations they experience in later life, easier to catch (Csatádi et al, 2005;Moons et al, 2004), and displayed some improved parameters of wellbeing and various stress responses (Belz et al, 2003;Cloutier et al, 2013;Del Arco et al, 2007;Klein et al, 1994).…”