The RSPCA in Swansea says it is seeing an increase in the number of abandoned cats and kittens it's taking in.
Staff there described this year as the 'worst ever' for the problem and said they're struggling to cope.
The problem stems from cat owners being caught out when their un-neutered pets have litters.
Now the society is working with Cardiff University to try to establish why owners aren't taking preventative measures.
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FIFA bosses will hear the FAW's case today after Wales fans wore poppies during a recent World Cup Qualifier.
More than a thousand youngsters in Wales were hospitalised for self-harming this year - an increase of over 40% in the past three years.
Twelve women in Wales have been killed, or suspected to have been killed, by men this year according to charity Welsh Women's Aid.