I often see netizens say: "Cats are really heartless animals. Every time I go out, dogs miss me, but cats don't." It is undeniable that cats don't express feelings as directly as dogs. This also has a lot to do with their species themselves and the length of domestication. However, every small animal will develop a deep relationship with its owner after being raised for a long time. It depends on whether the owner has enough patience and love to feel it.
Regarding the relationship between cats and their owners, a netizen from Malaysia, Hazlynn Nozi, shared this story:
Hazlynn has an orange cat named NaNa at home. This cute cat is usually closest to its father, because he feeds it breakfast every morning.
My father likes to go to the mosque to pray, and the cat NaNa stays with him, waiting for his father to finish praying, and then go home together.
The reason why NaNa likes Hazlynn's father so much is because his father loves cats very much. Not only NaNa, but all the cats nearby were cared for by her father.

But just two years ago, Hazlynn's father passed away.
During the period after his father passed away, the orange cat NaNa was extremely depressed and even went on a hunger strike. It was not until three months later that he slowly returned to his normal diet.
It likes to hang around his father’s favorite swing when he was alive, and also likes to lie down on his father’s old car.
Whenever the family goes to worship their father, NaNa is always the first to arrive.
Not only that, the attentive Hazlynn discovered that the cat would sneak out of the house every morning, and its paws would always be covered with sand when they returned home.

It turns out that NaNa has been going to her father's tomb for a while every morning for the past two years. He persisted like this for more than seven hundred days, rain or shine.
After Hazlynn Nozi shared the story of the orange cat NaNa, netizens were moved and also found it incredible: it turns out that cats can have such deep feelings for their owners, and it turns out that cats are not "heartless" as many people think.
I think this is the purest longing and emotional sustenance of a cat for its owner.
Although cats express their feelings in a reserved way, they know all the good things you do to them.