You added it in $ashowing(title)?
an example of my test server:
PHP Code:
$ashowingtitle = "Abandoned pets";
$ashowing = "These poor pets are dumped by their master, they still are looking for a new home. If you have some extra place in your pet collection, please help these guys out.<br>";
( doadoptab.php uses the same lang as doadopt.php since there is no real need to change the text)
of course you can always add the text to the page itself, lang.php is just to make changing texts easier(for when you make a language mod for example)