That frog looks like it's about to start barking like terrier.
Hunting spiders are very smart animals, even the little jumping spiders. They all know very well what they are doing, because they have to make plans and strategics to catch their prey, something what the spiders with webs don't need.
The spiders tell themselves that they're keeping the tiny frogs around because they're killing pests and also kind of cute but, really, there is a brain parasite in the frogs' feces - tiny amounts of which are all over the floor of the spiders' burrows - which makes the spiders believe this.
Let's not call them spider cats. Let's call them spider thralls. That sounds more badass.
and i thought these types of spiders were just big dummies
also this just reminded me to finish reading Children of Time!
https://www.scientificamerican.com/blog/tetrapod-zoology/tiny-frogs-and-giant-spiders-best-of-friends/