I still find it a rather intangible concept but it is basically having fun in copying in your own style an existing meme which may be an image, words or an idea. The Internet memes that I see most often concern images. There are images with words. For successful memes people in their millions repeat the image in their own style and it gradually evolves, spreading virally a bit like the growth of a living creature which brings me conveniently to the person who first dreamt up the word “meme”, Richard Dawkins, who is famous for his atheism and who wrote the book “The Selfish Gene” (a book on evolution) in which the word was first coined. The book was published in 1976.
This is a video about memes (it is a bit memeish itself):
This article is about an Internet cat meme of which there are many because the domestic cat is a favourite for Internet surfers. This is the “heavy breathing cat meme”, a complete mystery to me before I realised that some people like to search for information about it. However, I don’t think you can provide information about it other than by showing pictures because there is not a lot you can say about memes as they are rather abstract, in the minds and in the imagination of people having fun in copying and evolving the original.
Below is a large collage of the heavy breathing cat meme showing variations on it.
Here is a silly heavy breathing cat meme video which lasts for ten minutes! You might manage the first 30 seconds: