Once you have selected a study:

You will be presented with a table showing each animal in your study. As the research progresses, more data will become available such as measurements, study groups, tracking date and age.

To select animals in the animal table, click on the check boxes to the left of each animal. To select all animals click the check box in the top left corner of the table, this only selects animals in the page. To expand this to select all animals in the study click ‘Select all 10+ items in this table’ the number of animals selected is displayed to the left of the Bulk actions button.

To unselect these animals click 'Clear selection'