The Dogs Trust in Bridgend says over 600 dogs arrived at the centre last year - a record high.
Staff believe the struggling economy has played a part, but added many people simply don't realise the time and money needed to care properly for a pet.
They have urged would-be owners to think long and hard before committing to a dog.
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A generally dry night with clear spells in the north. Showers will push in to the south by the early hours!
Finley Thomas was a "lovely, happy beautiful baby" and changed in the months leading up to his death, a court has heard.
There will be more Welsh athletes than ever before, at this year's World Powerlifting Championships in Texas in June.