You will use data-labels to store meta information to display when hovering. You will need to add the tooltip object to enable the hover state on the label itself.
scaleK: {
tooltip: {
text: '%data-labels',
padding: '5px 10px',
backgroundColor: 'white',
borderColor: '#aeaeae',
borderRadius: '10px',
borderWidth: '1px',
fontColor: '#607D8B'
},
dataLabels: ['Dogs Long Text', 'Cats Long Text', 'Fish Long Text', 'Birds Long Text', 'Reptiles Long Text', 'Horses Long Text'],
labels: ['Dogs', 'Cats', 'Fish', 'Birds', 'Reptiles', 'Horses'],
}Related Documentation