Every person is unique, and even twins will have differences. This isn't just true for humans; it applies to animals as well. For example, even puppies from the same litter, living in the same environment and with the same owner, will grow up to be quite different!
In Jiangsu, a netizen has three dogs. The netizen treats them all equally, taking them with them in everything and feeding them the same food. However, despite this, the three dogs still seem to treat each other differently. Especially the two larger Corgis: one Corgi loves to eat and never seems to get enough, while the other Corgi hardly eats at all, barely finishing a bowl of rice!
Over time, the two dogs developed a significant size difference! One Corgi was as fat as a gas cylinder, while the other was skinny and bony! The two dogs standing side-by-side were like night and day! The owner was speechless, truly unable to deny having any favoritism!