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.
More top news
John Atkinson has resigned - but insists that his decision is about workload and nothing to do with recent problems within the Welsh party.
Amelia's mum Sarah Jones described how her dad was "panicking" when he told her the baby was "not breathing".
Former rugby star Ian Gough has won an assault appeal against former Miss Wales and ex-girlfriend Sophia Cahill.