A woman rider and her horse were surrounded and intimidated by five barking dogs on the Ashdown Forest last Friday.
A Conservators’ spokesman said: “Thankfully her horse was well schooled and steady and she was able to cope safely. This has happened before with the same dogs.
A child could have had a bad accident.
The dogs are a black labrador, a black labrador puppy, another black dog and two bichon frises.
They were being walked by a man who could not control them. He’s been seen between 9-9.30am and about 3.30pm.
Due to the mix and number of dogs he could be a professional dog walker - we’d like to find out.” If you see these dogs ring: 01342 823583.
A licence plate number would help police.