Cat says goodbye to dying brother: How our velvet paws mourn. The TikTok clip by @vanessaf0307 has been viewed over 6.6 million times so far.
Studies show that dogs visibly mourn the loss of other dogs. Just like humans, animals react to grief with stress. Cats, however, cannot cry when they are sad or in pain, like we humans do. When separated or losing a partner, cats may show signs of grief, including changing eating habits, restlessness, meowing and withdrawal.