The pound manager, the owner, vet and three staff members from the shelter had books of evidence served on them at Dublin District Court today.
Judge John Lindsay returned them for trial to Dublin Circuit Criminal Court.
The prosecutions follow a garda investigation into the treatment and deaths of dogs at Ashton pound, River Road, Castleknock in July last year. It had operated a dog warden service for the greater Dublin area.
The pound manager, Donal Moroney (67), of Ayrfield Drive, Coolock; the owner, David Stone (63) of Hazelbrook, Loughlinstown; and veterinarian Sydney Nagle (62) from the Oaks, Hollystown, Dublin 15 are charged with offences under the Animal Health and Welfare Act and European Community (Animal Remedies) Regulations, on dates last year.
Also charged are staff members Gordon Markey Quinn (22) of Nangle Court, Windtown, Navan, Co. Meath, Tamara Philips (23), from Westway Rise, Blanchardstown, Dublin and Raymond Connolly (53) of Claddagh Green, Ballyfermot, Dublin.
Today, state solicitor Anna Bridgeman said the DPP consented to the accused being sent forward for trial. Books of evidence were ready and were served on the six.
Judge Lindsay gave each accused the formal notice that they must provide any alibi details to the prosecution within 14 days.
He also ordered disclosure of any garda interview videos.
Solicitor Danica Kinane, for Mr Moroney, said her client would be contesting the charges.
In Mr Moroney's case, it is alleged that on July 24, 2020, he permitted another person to kill and cause unnecessary suffering to a male white-coloured bichon frise dog by orally administering the drug Release, which is required to be given intravenously.
Further charges allege he had the drug under his control at the pound.
On July 28, 2020, it is alleged he obstructed a garda by failing to comply with a requirement not to move the akita from the kennel it was in on July 27.
He is charged with obstructing the same garda on July 29, by failing and refusing to comply with a requirement to get immediate veterinary attention for the akita.
Another charge that had previously been brought was withdrawn.
Mr Nagle is charged with possessing the drug Release, at the pound on July 14, 2020, for the purpose of sale or supply in contravention of misuse of drugs regulations and laws.
Mr Nagle, of the Cara Veterinary Hospital, in Ballycoolin, D.15 is accused of causing unnecessary suffering to a male, fawn akita and a white male bichon frise, at the pound, on July 24 last year, 2020.
He is also charged with causing and permitting another person to kill a protected animal on the same date.
The vet is accused of failing to keep records of purchases and sales, quantities administered, batch numbers and serial numbers of prescriptions on July 29, 2020.
He also has a charge for permitting a person to be in possession of an animal remedy designated for use by a veterinary practitioner only.
Mr Stone is accused of causing unnecessary suffering to the akita and bichon frise on July 24 last year. He is also charged that he killed a protected animal or that he caused or permitted another person to kill a protected animal on the same date.
Mr Markey Quinn, Ms Philips and Mr Connolly face the same charges in relation to the akita and the bichon frise, as well as one for causing or permitting the killing of a protected animal on July 24, 2020.
Mr Connolly faces an additional charge for obstructing a garda at the dog pound four days later.