Ofcourse it does. Jesus wept.
I had 2 cats that were brothers and very close. One died and the other mourned for weeks and was clearly very upset and unhappy.
+1
Basic Human Emotions (Anger, Fear, And Yes, Love and Hate!) are typically associated with various neurotransmitters and hormones (Oxytocin, Cortisol, Adrenaline etc, etc)
Neither basic brain structure nor these neurotransmitters are unique to Humans!
All Mammals certainly, possibly other animals too (Reptiles? Birds?), that use the same neurotransmitters and possess similar brain structure will, ISTM, experience similar basic emotions. Emotions are after all how one makes decisions in the absence of abstract thought and a lot of even human decisions are made at an emotional rather than an abstract level!
Now, Humans DO have special cogitative abilities that are likely to be unique to our species, or at least in the degree to which we are able to use them (In particular an ability to look into the future and utilise abstract concepts) which means that our experience of emotion is likely to be rather different to that of (Most #! ) other animals but I am certain that the greeting that I get from my Cat or Dog when I come home after being out all day is just as strong an emotional experience, and a very similar one at that, as the one I might get from my Human family members.
Frankly, I find it astonishing that anybody might even think that this might
not be the case!
(# Dolphins in captivity, will, on occasion become depressed and will commit suicide by deliberately drowning themselves! It may seem like an odd definition, but ISTM that only a fully "Self Aware" creature would have the ability to deliberately kill itself!)