# Whistle

companion-animal collars combining a 3-axis accelerometer, GPS and neural-network behaviour classification; the brand was acquired by Tractive in 2025, consolidating the US pet-tech segment.

Source: https://en.bioecon.ru/companies/whistle/
Updated: 2026-07-02

- Country: United States

## Verifiable facts

| Fact | Value | Source |
| --- | --- | --- |
| Funding | $21M total funding across 2 rounds | https://indexed.vc/companies/whistle, https://www.thecompanycheck.com/company/b/whistle/3ygttecnfohvk383o |
| Capacity | no specific public data available [medium confidence] | http://www.datalog.co.uk/browse/detail.php/CompanyNumber/USOR113005995/CompanyName/WHISTLE+LABS%2C+INC., https://www.imarcgroup.com/smartphone-linked-pet-devices-manufacturing-plant-project-report |
| Certification | no specific public data available [medium confidence] | http://www.datalog.co.uk/browse/detail.php/CompanyNumber/USOR113005995/CompanyName/WHISTLE+LABS%2C+INC., https://www.imarcgroup.com/smartphone-linked-pet-devices-manufacturing-plant-project-report |
| Regulatory approval | no specific public data available [medium confidence] | http://www.datalog.co.uk/browse/detail.php/CompanyNumber/USOR113005995/CompanyName/WHISTLE+LABS%2C+INC., https://www.imarcgroup.com/smartphone-linked-pet-devices-manufacturing-plant-project-report |
| Production site | manufactured via external partners in Singapore, China, Taiwan and Hong Kong | https://www.importgenius.com/importers/whistle-labs, https://www.importyeti.com/company/whistle-labs |
| Headcount | approximately 40-200 employees (estimates varied by reporting period) [medium confidence] | https://indexed.vc/companies/whistle, https://www.thecompanycheck.com/company/b/whistle/3ygttecnfohvk383o |
| Revenue | no public annual revenue data available [medium confidence] | https://www.thecompanycheck.com/company/b/whistle/3ygttecnfohvk383o |

Independent sources: datalog.co.uk, imarcgroup.com, importgenius.com, importyeti.com, indexed.vc, thecompanycheck.com

## Technologies

- [Animal Welfare Tech (Sensors & Behavioral Monitoring)](https://en.bioecon.ru/technology/animal-welfare-tech-sensors-behavior-monitoring/)