If it's true that avocado seeds could pass through the digestive system of large prehistoric animals, but not modern animals, then what is the current method of widespread dispersal?

JENNASCERR

There are three types of chance long distance dispersal. One relies on wind and other air currents; a second on oceanic drift; and a third on birds. http://www.aquariumofpacific.org/TOPAZTIMES/EdMthlyFeatures/FocusDispersal.htm Jul 12 08, 10:57 PM

jaknginger

Dispersal is still by water, wind and animals and too some plants have explosive seed dispersal. http://www.countrysideinfo.co.uk/seed_dispersl/index.htm Jul 13 08, 4:59 AM

queproblema

A sufficient number of human beings enjoy eating avocados enough that we took over where nature left off. "When the avocado's hypothesized ecological partners disappeared the avocado likely would have gone extinct, or evolved a different fruit morphology, if human cultivation had not maintained this 'ghost of evolution.'" http://en.wikipedia.org/wiki/Avocado#Co-evolution Jul 13 08, 10:23 AM