The Chapel St Vets have pledged to donate to the Wairarapa SPCA the amount of money stolen from their premises on the weekend.
SPCA staff discovered on Monday morning their money from Sunday's Children's Day fundraiser - $730 - had been taken. A window had been forced open and the till raided.
Chairman Rob Sewell said staff were "gutted" by the theft.
Stu Bruere, owner of Chapel St Vets, read about the SPCA's misfortune on Facebook and in the Wairarapa Times-Age.
"They are an organisation that is important in our society.