When you first arrive at the site, a pre-populated search is loaded and executed once you click the "Search" button. The results of the search load both on the map and in the table. To the right of this table is a summary of the search criteria used to return these results. These criteria are loaded by default once you come to the site.
Clicking on "Change Search Criteria" allows you to do just that. You can filter observations based on locality, date, observation type, date type, identity type, location type, evidence type, and sex type. A complete definition of each term is available in the References section, but short descriptions are given here:
Observation type refers to the experience of a person observing a jaguar.
Date type refers to the precision of the date associated with each observation.
Identity type explains the level of certainty that the animal observed is a jaguar, as opposed to another
large cat.
Location type refers to the precision with which an observation can be associated with an exact point in
space.
Evidence type describes the kinds of evidence that support each observation.
Sex type refers to whether or not the sex of the observed animal is known, and to what degree of
certainty.