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Nature's 10 best animal dads

By: Bryan Nelson on June 15, 2011, 1:03 p.m.
Pacific Spiny Lumpsucker

Photo: Chelsea Cameron/Shutterstock

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They may not be the prettiest of animals, but little lumpsuckers are always beautiful in their daddy's eyes. Lumpsucker fathers are particularly notable for their dedication in looking over their brood until the eggs hatch.

The father uses his modified pelvic fins, which have essentially evolved into suction cups, to glue himself to a surface near the eggs. There he sits and watches over his spawn until they hatch. Predators are met with a fierce display of protectiveness, if any attempt is made to harm the eggs.