@array_1 = ("cat", "rat", "lion");
@array_2 =("dog", "tiger");
$variable="horse";
%hash=("1" => 'peacock', "2" => 'duck')	;

foreach (@array_1, @array_2, $variable, @hash{keys %hash})
{
	if ($_ eq "tiger")
	{
		print "\nfound $_";
	}
}