Two puppies have been seized by Revenue officers at Dublin Port.
The two eight-week-old Chihuahua cross puppies were found on Wednesday morning.
Officers stopped and questioned a man who was travelling to the UK.
The man did not have pet passports for the dogs, nor were the dogs microchipped - as is required under the Animal Health and Welfare Act.
The puppies were transferred into the care of the DSPCA, where they are receiving veterinary attention.
Separately, approximately 1kg of herbal cannabis was seized as part of an intelligence-led operation in Waterford.
It followed a search under warrant of a property in Waterford city.
The illegal drugs have an estimated street value of €20,000.
The joint operation was conducted by Revenue's Customs Service, the Garda National Drugs and Organised Crime Bureau and the Waterford City Garda Drugs Unit.
A 29-year-old Irish man was arrested by Gardaí and is currently being detained at Waterford City Garda station under Section 2 of the Criminal Justice Act
Investigations are ongoing following both operations.