In the standard Hénon family various coexistence phenomena can occur. In particular there is a positive Lebesgue measure set of parameters such that finitely many attractive periodic orbits and a “strange attractor” coexist. We also get a new approach to the Newhouse phenomenon of infinitely many coexisting attractive periodic orbits. Also two strange attractors can coexist for maps with parameters in the classical Hénon family. This is joint work with
Liviana Palmisano.