Do you have to feed ur cat halal food?
In the Name of Allah, the Most Gracious, the Most Merciful.
As-salāmu ‘alaykum wa-rahmatullāhi wa-barakātuh.
It is not permissible to feed such food that contains Haram ingredients such as Haram meat to your cat.
You may consider buying pet food that does not include Haram ingredients or you may prepare some food yourself using Halal meat.
And Allah Ta’āla Knows Best
(Mufti) Abdul Azeem bin Abdur Rahman
 Fatawa Rahimiyyah, Vol. 10, page 138, Darul Isha’at (Urdu)