Yes, animal testing occurs in Ireland under strict EU regulation. According to the European Commission, 19,579 procedures were conducted in 2017 (latest comprehensive EU report). The majority involved mice, rats, and rabbits; smaller numbers of dogs, pigs, and non-human primates were also used. Purposes included regulatory testing, basic research, and toxicology.
Ireland has faced growing public pressure to reduce animal use. The government committed €5 million (2013) to develop alternative methods and participates in EU programs (FP7, Horizon 2020) promoting the 3Rs: Replacement, Reduction, Refinement.