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Private foundations don’t post open calls, so nobody can search them. We read IRS filings instead — 9.6 million grants from 174,053 foundations and grantmaking charities, searchable by what the money was actually for.

10 funders with a record of paying for “herpetology”

Where the money went

1.0×
Jrs Biodiversity Foundation → Nature Uganda: $205K across 2 grants, latest 2024Liebchen's Gift Foundation → Phoenix Herpetological Sanctuary: $165K across 4 grants, latest 2025Nina Mason Pulliam Charitable Trust → Phoenix Herpetological Society: $75K across 1 grant, latest 2024Robert D Fisher Foundation Inc → Phoenix Herpetological Society: $70K across 4 grants, latest 2025Aen Foundation → St Louis Zoo: $20K across 1 grant, latest 2025Petsmart Charities Inc → Phoenix Herpetological Society Inc: $13K across 1 grant, latest 2021O'donovan Family Foundation → Phoenix Herpetological Society: $12K across 3 grants, latest 2025The Maxwellhanrahan Foundation → California Academy of Sciences: $10K across 1 grant, latest 2022Arizona Community Foundation → Phoenix Herpetological Sanctuary: $8K across 1 grant, latest 2021Bristol-Myers Squibb Foundation Inc → Phoenix Herpetological Society Inc: $1K across 1 grant, latest 2022O'donovan Family Foundation → Phoenix Herpetological Society: $3K across 1 grant, latest 2022Jrs Biodiversity Foundation: $205K on this topic. Open the funder.Jrs Biodiversity Foundation$205KLiebchen's Gift Foundation: $165K on this topic. Open the funder.Liebchen's Gift Foundation$165KNina Mason Pulliam Charitable Trust: $75K on this topic. Open the funder.Nina Mason Pulliam Charitable…$75KRobert D Fisher Foundation Inc: $70K on this topic. Open the funder.Robert D Fisher Foundation Inc$70KAen Foundation: $20K on this topic. Open the funder.Aen Foundation$20KO'donovan Family Foundation: $15K on this topic. Open the funder.O'donovan Family Foundation$15KPetsmart Charities Inc: $13K on this topic. Open the funder.Petsmart Charities Inc$13KThe Maxwellhanrahan Foundation: $10K on this topic. Open the funder.The Maxwellhanrahan Foundation$10KArizona Community Foundation: $8K on this topic. Open the funder.Arizona Community Foundation$8KBristol-Myers Squibb Foundation Inc: $1K on this topic. Open the funder.Bristol-Myers Squibb Foundati…$1KNature Uganda: received $205K on this topicNature Uganda$205KPhoenix Herpetological Sanctuary: received $173K on this topicPhoenix Herpetological Sanctuary$173KPhoenix Herpetological Society: received $148K on this topicPhoenix Herpetological Society$148KSt Louis Zoo: received $20K on this topicSt Louis Zoo$20KPhoenix Herpetological Society Inc: received $14K on this topicPhoenix Herpetological Society…$14KPhoenix Herpetological Society: received $12K on this topicPhoenix Herpetological Society$12KCalifornia Academy of Sciences: received $10K on this topicCalifornia Academy of Sciences$10K
10 funders, 7 recipients, grants matching “herpetology” only. Ribbon width is proportional to the total given; each funder has its own colour (smaller funders in gray). Hover a name to isolate its flows, click a funder to open it. Drag to move around; zoom with the buttons, a double-click, or the wheel after clicking the map.

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Source: IRS Form 990-PF Part XV and Form 990 Schedule I, tax years 20192025. These are grants already paid, a record of what an organization funds rather than an open call. Private foundations rarely accept unsolicited applications and the route in is usually a program officer; grantmaking charities and associations more often run real application cycles, so check their website. How this data is built, and its limits →