More than 170 people tried to surrender their dogs in the five weeks after Christmas.
Dogs Trust received an average of four requests every day from people looking to give up their pets following Christmas.
From December 26th to the 31st of January the charity received 89 phone calls and 83 emails from concerned new dog owners.
Becky Bristow, Executive Director of Dogs Trust Ireland said:
“We are saddened to see so many people struggling with their dogs’ behaviour and urge all dog owners to attend training classes, such as our online Dog School classes."
"Many issues can be prevented when they first arise, with simple training techniques, but often by the time people contact us, they are at their wits end and want to relinquish their dog.”
For the second year running, the most common reason provided was the person being unable to manage the animal's behaviour.