The shocking photographs show dead dogs piled against each other after claims they were killed because of a lost security contract in the Middle East.
As many as 24 dogs used by a K9 security company are alleged to have been killed, while there are fears of what will happen to another 90 animals used for protection work.
Kuwaiti lawyer Esmail Al Misri is reported to have has lodged a formal complaint with the authorities in the Gulf oil state, calling for a criminal investigation.
Kuwait Today reported that the American security company worked with a Middle Eastern oil concern and was paid $9,900 (£6,744) a month for each dog.
Pictures of dead dogs piled against what appear to be cages and across the floor also emerged on social media over the weekend, with calls from animal lovers for the remaining dogs to be sent to the USA.
The Arab Times says it has spoken to an employee at the security company on the condition of anonymity who stressed that a “lot of falsehoods” were being spread online.
In its report, the Arab Times said the security employee had revealed that although the handlers had not been paid and a contract was lost, there were other contracts in play and the dogs had been humanely euthanised solely for medical reasons.
All the dogs that were selected to be put down were old and retired from service “on account of medical conditions” that included tumours, cataracts, chronic diarrhoea and hip dysplasia while others were too aggressive.
He claimed that the dogs had been seen by vets and diagnosed with these issues two years ago.
The Arab Times added that the company explored alternatives and contacted animal welfare societies in Kuwait to facilitate the adoption of the dogs but all these attempts were unsuccessful.
“These dogs were suffering in the condition they were in. In my opinion, this should have been done a year ago”, he said, adding that in the past eight years two dogs had been put down when their aggressive behaviour had become a liability while others had died of natural causes.