A dog rescue volunteer said she was "left bewildered" after rescuing 13 young dogs dumped on the side of a country road.
Shelly Munns, from Marching Mutts, which provides Fenland District Council's dog collection service, received a phone call from a driver on 23 March, who had spotted "dogs running everywhere" at Dykemore Drove, Doddington, Cambridgeshire.
"It was pitch black, but we managed to rescue 11 on the first day, the 12th the next day and then a 13th dog was rescued on Tuesday - it was very, very skinny," she said.
Munns said the first 12 dogs were in good condition, so she suspects their owner "got into trouble with over-breeding" and could not afford to neuter them.
"I genuinely believe there are people across Fenland that do want their dogs neutered that have hit hard times - we want them to us work with us rather than do things like this," said Munns.
Munns received the first call about the abandoned animals at just before 19:00 GMT.
"We jumped in our cars and off we went; some were in ditches, one went into a water-filled ditch that poor Jodie [Woollard] and my daughter had to get into to get him out," she said.
"They was running, they was just petrified, absolutely traumatised," she added.
She said she was "just bewildered" that anyone could have got rid of the dogs in this way.
Woollard, a nurse at the TrioVets in March, Cambridgeshire, checked the dogs over and confirmed they were in good condition and well-fed - suggesting their owner had only just dumped them.
"They're all within foster homes and really coming around; long-term, we'd like to get them adopted in their forever homes," she said.
"To be honest, I think we've been really lucky to get them all alive; it's quite a miracle really that not one was hurt."
Four dogs were dumped at the same site last year - and one was killed on the bypass before it could be rescued.
Dykemoor Drove is a remote road surrounded by fields and after eight days on its own, the final rescue was "dehydrated and a lot more timid and snippy, snappy", said Munns.
The animals were not from the same litter and were a mix of different breeds such as terriers, dachshunds and Jack Russells, and were all under a year old.
Munns suspects this means they were dumped by the same owner, adding: "Just before this came to light, Marching Mutts and Trio wanted to [host] a May spay day, with Trio offering a discount on its neutering service and Marching Mutts raising the funds to cover the rest of the costs... to try and help with the over-breeding for people that have genuinely hit hard times."