Tests are being carried out in the New Forest after eight dogs died after being taken for walks at a popular beauty spot.
Vets say the animals got a cut on their paw and think a mystery toxin in the ground could have infected the wound.
The council says it's looking into the claims and people should stay away from Latchmore Brook near Fordingbridge if they're worried.
Martin Dowse speaks to Roger Stobbs, of Forest Veterinary Clinic, and dog owner Pauline Chalk.
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Showers this evening then dry overnight.
Showers this evening then becoming dry but cloudy overnight.
The Prime Minister will join hundreds of military personnel in Liverpool on Saturday as the country marks Armed Forces Day.