W
Whistle
Home Living · San Francisco, United States · Founded 2012
Whistle GPS Tracker For Dogs & Cats MoreLess
Whistle offers smart devices designed to provide pet parents with comprehensive insights into their dog's health. Powered by a team of veterinarians and data scientists, Whistle leverages six years of research and a health study involving over 100,000 dogs. The company operates in the pet care technology market, focusing on delivering peace of mind to pet owners by offering detailed health monitoring solutions. Whistle's business model includes selling these smart devices and potentially partnering with other entities in the pet care industry. As part of Kinship, the venture, technology, and data division of Mars Petcare, since 2016, Whistle aligns with Mars' mission to create a better world for pets. For partnership inquiries, contact [email protected].
Keywords: pet health, smart devices, veterinarians, data scientists, research, health monitoring, pet care, Mars Petcare, Kinship, partnerships.
Company overview
Whistle company information
The essential company record, classifications and operating signals in one place.
- Status
- Acquired
- Founded
- 2012
- Headquarters
- San Francisco, United States
- Employees
- 20
- Open positions
- None listed
- Dealroom signal
- 78.7
Valuation & funding
Whistle funding history
Company financing events and reported valuations.
| Deal type | Date | Amount | Valuation | Investors | Source |
|---|---|---|---|---|---|
| ACQUISITION✓Exit | Jul 2025 | $0 | — | Tractive | ↗ |
| ACQUISITION✓Exit | Apr 2016 | $119M | $119M | Mars | — |
| SEED✓Equity / VC | Sep 2015 | — | — | Alumni Ventures · Green D Ventures | — |
| SERIES B✓Equity / VC | Jan 2015 | $15M | $60M | Qualcomm Ventures · Queensbridge Venture Partners · Green D Ventures · Melo7 Tech Partners | — |
| OtherOther financing | Jun 2014 | $0 | — | Undisclosed | — |
| SERIES A✓Equity / VC | Jun 2013 | Kevin Colleran · Red Swan Ventures · Slow Ventures · Gunderson Dettmer | — |
Financials
Workforce over time
Available workforce history. Financial fields without reported data are omitted.
| Year | Employees |
|---|---|
| 2026 | 20 |
| 2025 | 17 |
| 2024 | 17 |
| 2023 | 17 |
| 2022 | 17 |
| 2021 | 20 |
| 2020 | 55 |
Growth signals
Whistle website traffic
Latest recorded traffic for Whistle is 260 monthly website visits, down 42.2% over the last three months. Whistle's team grew 17.6% over the past year.
Comparisons
Whistle compared with similar companies
Dealroom’s weighted taxonomy model identifies the closest operating peers. Company identity and context stay open; selected comparison metrics preview what is available in the platform.
Talent graph
Whistle's talent
Source: Dealroom Talent Intelligence.
Global footprint
Where Whistle has talent and traffic
team presence
In the news
Latest news about Whistle
Recent press, funding announcements, and product moves mentioning Whistle — open to read from the original sources.
Market sentiment
What the market is saying about Whistle
An AI-synthesized read of the highest-engagement posts about Whistle on X over the past 7 days. We rank by likes & retweets, ignore corporate channels, and surface the themes that broke out from real people.
Reading the room on X — pulling top posts and synthesizing themes…
Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour
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