How to Add Animals to a Study

Open the study you want to populate, then click the Animals tab (the second tab, after Overview). The heading reads Study animals (N). An empty study shows "No animals yet. Use the Cohort Builder to add animals to this study." A Cohort summary below the table breaks the cohort down by sex, genotype, strain, litter, and cage.

In the action row at the top-right of the Animals tab, click the Cohort Builder button. A dialog titled Cohort Builder opens — this is the only way to add animals to a study (there is no manual "add by tag" form).

Set one or more filters to narrow which colony animals you want, then click Search. Filters include Search (tag / id), Strain, Genotype, Sex, Age min/max (days), DOB from/to, Cage, Litter, and an Include inactive (dead / archived) checkbox (off by default). Before you search, the candidate area reads "Set filters and search the colony."

After searching, matching animals appear in the Candidates (N) table with Tag, Sex, Strain, Genotype, DOB, Age (d), and Cage. Tick the checkbox on each animal you want (or click the row); a N selected chip tracks your selection. Animals already in another active study are shown dimmed with a warning icon and cannot be selected.

Click Add to study (N) at the bottom of the dialog (disabled until at least one animal is checked). On success a confirmation appears, the dialog closes, and the new animals show in the Study animals table with status Included. The Cohort summary and the study's KPI counts update automatically.

To drop an animal from the active cohort without deleting its record, click the red Exclude button in its Actions column. In the Exclude animal dialog, enter an Exclusion reason (required) and click Exclude. The animal moves to a separate Excluded section, its status chip turns to Excluded, and the reason is shown.