Actor Choi Jin-Hyuk, upon hearing the name of his beloved dog Mongsil's illness, cries, ”I should have prepared myself mentally” = ”Diary of my son's growth in his 40s”

Actor Choi Jin-Hyuk brought tears to his eyes as he prepared for the end of his beloved dog Mongsil.
")" showed Choi Jin Hyuk taking his beloved dog Mongsil to the vet. During the episode, Choi Jin Hyuk said, "Mongsil is sometimes not feeling well."
"When I was quiet like a dead person, I couldn't sleep well because I thought, 'What if?'" Choi Jin-hyuk continued, "I was even more worried when I heard that I had to make final preparations at the hospital.
After that, he was not sleeping well and sometimes it seemed like he was not breathing at all, so I would wake him up by shaking him in surprise." In response, the veterinarian said, "We did an ultrasound of his heart and found a large tumor.
"It's angiosarcoma, but it's similar to human blood cancer," he said. "Mongsil was found to have a tumor in her right atrium, but the tumor mass was pressing down on most of her heart, so the blood flow was limited."
The fluid is not flowing well and the heart itself is not working well. On top of that, the cancer has spread to the heart, spleen and skin," he explained. Choi Jin-Hyuk expressed concern and the veterinarian said, "We are suppressing the activity with medicine.
"However, if the cancer becomes so active that the drugs are no longer effective, it may grow again. We must prepare ourselves mentally for the risk of it worsening again."
Choi Jin-Hyuk responded, "They told me to prepare myself, but it's my first puppy and I've never been apart from it, so it's hard to accept," and "How should I prepare myself?"
"I don't know what to do," he said. After going to the hospital, Choi Jin Hyuk eventually went to the funeral home for his dog.