Rso Foundation
The RSO Foundation (Richard and Shirley Otto Foundation) is a Nevada-based private foundation focused on animal welfare, including funding for affordable veterinary care and support for rescues. The organization’s official site lists its mission, leadership (President and Executive Director), contact details (P.O. Box and email), and a dedicated grants section.
Source: Website · Mar 2026
Ideal Applicant
Established or project-focused animal welfare organizations (rescues, affordable veterinary programs, wildlife/horse/dog/cat rescue groups) with a demonstrable track record and either a California presence or a clear regional impact that aligns with the foundation’s animal‑welfare focus.
Good Fit
- • Clear animal welfare mission (rescue, affordable vet care, rehabilitation).
- • Existing program or operations in California or demonstrable impact that benefits California communities.
- • Capacity to receive grants in the $5K–$320K range and to report measurable outcomes.
- • History of credible referrals, partnerships, or introductions that could lead to preselection.
Geography
Grants appear across multiple states (nine observed in the latest year) but are heavily weighted toward California, which received roughly 83% of grant dollars in the latest year, indicating a regional (state‑focused) footprint rather than a national spread.
Recipient Variety
The foundation funded dozens of distinct recipients annually (34 in the latest year, and 29–44 in prior years), including many independent nonprofits and a substantial number of new grantees, showing a broad recipient set for its size.
New Applicants
Behavioral evidence shows many new grantees each year (23 new recipients in the latest year), but the foundation also states it only funds preselected applicants; this combination suggests new entrants can be added but typically via invitation, nomination, or relationship channels rather than an open competitive application.
Source: Zeffy Agent · Mar 2026
