-- Shares Facebook Twitter Reddit Email Cat intelligence is an ongoing area of research, with new discoveries being made all the time. Such as when cats make certain facial expressions , they do so to communicate complicated emotions. Scientists believe cats can feel shame , love and other sophisticated sentiments.

There are even some cats can be trained to "talk" to humans using buttons that produce specific English words. Now a recent study in the journal Applied Animal Behaviour Science reveals that cats may be deep enough to display grief when they lose a beloved animal companion. Related Dogs understand your facial expressions and know what you're feeling, study says To learn this, researchers from Oakland University's Department of Psychology studied 412 cat caregivers regarding both their experiences and the experiences of surviving cats after their families lost another beloved pet to death.

They found that the surviving cats displayed "grief-like behaviors" such as seeking attention and losing interest in eating, playing and sleeping. This finding is somewhat complicated by the fact that caregivers who expressed higher levels of grief were more likely to report the same emotions in their cats, suggesting a possible bias or tendency to anthropomorphize the animals. "[The cats] engaged less in sleeping, eating and playing.

.." Yet because there is a dearth of research on this subject — indeed, this is only the second known exploration of this issue — the scientists .