Catboy by Eric Walters. Reading level: Grades 4+. Catboy tells the story of Taylor, who has recently moved from a small town to the big city. Taylor makes a new friend named Simon and together they discover a feral cat colony. When a new condominium development threatens the cats' survival, Taylor vows to come up with a solution. https://www.amazon.ca/dp/1554699533/ref=cm_sw_r_pi_dp_x_MXbxzbHH04NFK