There's concerns in South Auckland, as unsupervised dogs roam neighbourhoods and kill scores of cats.

Following the Covid-19 pandemic, there's been an uptick in dogs in Auckland and residents are concerned.

Conifer Grove Residents' Association chair Kelvin Hieatt says a community group went out most nights between 10pm and 5am, tracking down four identified dogs.

"Once the black female dog was caught, the cats stopped being killed- full stop."

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