Perth pre-schooler William Blanskby has been getting "a lot of love" over a photo of him comforting his baby brother William, who has terminal cancer.
"I was getting ready in the bathroom and my husband was in the kitchen," his mother Sheryl said when she posted the photo.
"The kids were quiet, especially Mr preschooler."
I tiptoed to the lounge with my camera ready to catch anything they are doing. I was expecting my baby to be covered in Nutella or something but instead I saw this. My preschooler is telling his baby brother "Kuya (big brother) is here. Everything is ok."
She has been overwhelmed with a positive response since posting the photo to Instagram.
"He is really a loving soul and I am so damn proud of him for the boy he is becoming," Ms Blanskby said in another post about William.
"He's a normal Three-nager, strong-willed and defiant, but he's got the biggest heart and funniest laugh."
"Thank you for the love."
Sheryl and Jon Blanksby found out Thomas had terminal cancer when he was 11 weeks old, according to a GiveALittle page set up by their friends.
"He's already been through one tough operation to remove a tumour in his kidney and they thought the next step would be going through his recovery process. Sadly, this wonderful family are now left with precious limited time with their little man."
The parents were not aware at first that the fundraising page had been set up, and in a recent post to the page they say: "We cannot believe the donations and kind words we have received from close friends to complete strangers with a kind heart."
"We have just returned from a memory making trip in the Gold Coast that saw Thomas ride on his first theme park ride, a Looney Tunes carousel. Every minute we spend with him we cherish and we are trying to give him the best experience possible."
"Thank you again for sharing Thomas's story, we hope that his story can help people to connect with loved ones and hold them tighter and perhaps he will help us all understand that life is too short to worry about trivial things, focus on what you love, follow your passion and love unconditionally."
"We still hope for a miracle."