A study published last month in Nature's Scientific Reports found that cows' "voices are individually distinct," and that "they're able to maintain these individual characteristics across the contexts". The research team hopes that "through gaining knowledge of these vocalizations, farmers will be able to tune into the emotional state of their cattle, improving animal welfare".
The research team looked at a herd of dozen cows in Australia and was able to gather 333 samples of cow vocalizations and analyzed them using acoustic analysis programs.
"Positive" noises Vs. "Negative" Noises:
The recordings included "positive" noises the cows made during "positive" contexts like right before meals as well as "negative" situations, such as denied feed access and during physical and visual isolation from the rest of the herd", a statement from the university explains.
The conclusion of the research is that farmers should integrate the knowledge of individual cow voices into their daily farming practices.