Two kittens whose white bits were ‘coloured in’ with blue and green marker pens are well on the way to recovery.

Carers at Bradford Cat Watch Rescue Kittens are nursing the kittens – named Smurf and Shrek – back to health.

The four-week-old black and white kittens were rescued by police investigating drugs offences at a house in Bradford.

Volunteers at the charity took the kittens in and have been bathing them repeatedly in surgical spirit and a special scrub to remove the dye from their fur.

Yobs had turned all Smurf’s white bits blue and Shrek was inked in green.

Video thumbnail, Kittens covered in permanent marker - Martin Shaw reports
Video Loading

Now the colour is starting to fade and care co-ordinator Katie Lloyd said: “We have been nursing the kittens for 36 hours and they are now much brighter in personality. The colour is fading and they are feeding well.”

The story of extraordinary cruelty captured the attention of media around the world.

READ MORE: Shame on you! Yobs 'colour in' cute black and white kittens with permanent marker pen

Katie said she had dealt with “literally hundreds” of calls from journalists and the story had been shared by thousands of people on Facebook.

The charity hopes the plight of the kittens will boost donations.

BCWR is the first stop for police and other emergency services in West Yorkshire with injured or abused cats and kittens.

The charity has 21 volunteer carers and is currently looking after 80 cats and kittens. It also offers a re-homing service.

Writing on her Facebook page Katie said the charity wanted to deflect the media spotlight for a while and added: “Today we will be having a quieter day. We will not be meeting with the press or having lengthy interviews.

“We will be doing what we pride ourselves on the most – providing intensive nursing to the cats and kittens in our care.”