Possible Clues:

• Oddly ignored ulna: x-rays next part of windpipe
• It's down in the mouth
• Big cat grabbing a deer's tail and part of throat
• Negligent about navy guarding unknown internal channel
• Speaker's cat catching a rook
• One used to scream at rat, initially, with cat circling
• Cat has hair regularly stuck in part of throat
• Animal seizing artist round throat
• Body part of cat probed by a practitioner, ultimately
• Cat grabbing a rat's head and part of throat