The Sunspire why do piranha plant have bone in it?

From one mountain range to the other the cat had travelled. No territory she had yet come across seemed like the ideal place to settle. Her movements up the mountain had been swift and positive. She had wanted to catch the sun as it rose from beyond the valley and swung over the mountain pathways. She had sat in a prime position to catch this scene on a grassy knoll along the mountain steppes. Despite the cloud-coated skies, the lighting was excellent.

The light brought forth by the cool morning gave her full a wonderful golden halo. As she watched the sunrise, she heard a sound and jolted when a feline figure appeared on the slope. Previous encounters with males of her kind had left her with a small scar on her side. Though she was sure she had found no sign of a claim to these lands on her climb, her tail puffed up like a toilet brush and her ears swivelled backward.

Wh-who goes there? she hissed, feigning strength, clearly terrified.