Those species which were most successful on land eventually lost this feature.

Why ,how and when did our species lose its way?

Like many geckos, this species can lose its tail when alarmed.

During the dry season, the species loses its leaves.

When the two conflict, trade tends to win and the species lose.

Above all, our species loses the dignity we're so eager to accord it.

Tropical species may also lose their leaves during the dry season.

Each species has its story, now all but lost in the sands of time.

Some species actually lost features such as eyes or skin pigmentation.

This species, over evolutionary time, has lost its worker caste altogether.