However, there has been some study about the way the tarantula body, its nervous system, and the spider brain works. Currently, the consensus is that tarantulas do not have the brainpower or capacity to feel or process emotions, therefore they do not have the ability to feel happiness or love (or sadness, etc).

Do tarantulas feel affection?

PETS & VETS: Tarantulas are an affectionate - but not cuddly - pet.

Do tarantulas love their owners?

A tarantula will neither learn to love their keeper or hate them. When they are showing resistance to moving in a specific direction, or redecorating their cage against their owner's wishes, it is just a spider reacting to external stimuli. They cannot adopt an attitude and become defiant towards their owner.