Determination of CNVR (Catch – Neuter – Vaccinate- Release) Model Effect: Stray Dog Population Management, Public Nuisance and Dog Abuse in Sri Lanka

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  • Viranga Kumudini Jayasundara Veterinary department, Dehiwala Mt. Lavinia Municipal Council, Sri Lanka
  • Ali Khatibi Management and Science University, University drive, Off Persiaran Olahraga, Section 13, 40100, Shah Alam, Selangor Darul Ehsan, Malaysia
  • Jacquline Tham Management and Science University, University drive, Off Persiaran Olahraga, Section 13, 40100, Shah Alam, Selangor Darul Ehsan, Malaysia
  • Aruna Pallewatte National Hospital of Sri Lanka, Colombo


Free-roaming dogs, CNVR, Public nuisance, dog abuse


This study aimed to determine the effectiveness of the Catch-Neuter-Vaccinate-Released (CNVR) intervention on free-roaming dog (FRD) population management, the abatement of public nuisances, and dog abuse. FRD population (unowned) was surveyed at equal intervals (2013, 2015, 2017, and 2019). Public complaints on public nuisances and dog abuse regarding FRD from 2013 to 2020 were analyzed. Pearson’s chi-square goodness of fit and bivariate linear regression were used for the statistical analysis. CNVR intervention affected the abundance of  FRD population(χ² (3,N = 6201) = 57.6374, p-value = 1.87). FRD population abundance showed a significant relationship with public nuisances (except the incidence of dog bites, ρ>.05) and dog abuse.


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2023-12-15 — Updated on 2023-12-19


How to Cite

Viranga Kumudini Jayasundara, Ali Khatibi, Jacquline Tham, & Aruna Pallewatte. (2023). Determination of CNVR (Catch – Neuter – Vaccinate- Release) Model Effect: Stray Dog Population Management, Public Nuisance and Dog Abuse in Sri Lanka. The Indian Veterinary Journal, 100(12), 7-15. (Original work published 2023)