"Some of", indeed. The poster above is correct that your statements are over-broad.
There are hundreds of Roman monuments, inscriptions, and poems [celebrating dogs](https://thepetrifiedmuse.blog/2015/06/20/every-dog-has-his-d...) as companions and pets. There are medieval European graves that strongly suggest sentimentality towards the animals buried in them. There's this [lovely ninth-century Irish poem](https://www.poetryfoundation.org/poetrymagazine/poems/48267/...) about a cat. Someone with more knowledge in the area than I possess should comment on animal portraiture in ancient and early-modern China and Japan, but that was a thing as well.
I think the fairest thing to say is that people in every era - very much including today - instrumentalize some animals, and sentimentalize others.
There are hundreds of Roman monuments, inscriptions, and poems [celebrating dogs](https://thepetrifiedmuse.blog/2015/06/20/every-dog-has-his-d...) as companions and pets. There are medieval European graves that strongly suggest sentimentality towards the animals buried in them. There's this [lovely ninth-century Irish poem](https://www.poetryfoundation.org/poetrymagazine/poems/48267/...) about a cat. Someone with more knowledge in the area than I possess should comment on animal portraiture in ancient and early-modern China and Japan, but that was a thing as well.
I think the fairest thing to say is that people in every era - very much including today - instrumentalize some animals, and sentimentalize others.