so a kitten showed up in the yard yesterday, looks to be about 4 months old, scrawny and underfed, fearful, but not wild. took it in to quarantine (the spare bathroom) to make sure it's healthy before letting it either join the indoor cats, or the oudoor barn cats. it's thin and scruffy looking, hair is rough and it needs a bath, but seems otherwise healthy - eyes clear, temperature normal, no cuts or bruises, doen't mind being handled anywhere, no obvious injuries or health problems, eating and drinking and using the kitty box. but... when you pet it on it's ribs or neck or behind it's front sholders, it crackles. like rice crispies. so I was aware of that symptom from blackleg in cattle, I know it means air/gas under the skin. looked up the condition online for cats, it's called subcutaneous emphysema, but apparently cats are resistant to the microbe that causes blackleg in cattle, so it has to be another cause. leading on-line contenders are injury that ruptures a lung or windpipe allowing air to leak out, puncture or open wound that allows air under the skin, or air introduced when sub-q fluids are given (poor medical technique). checked the kitty all over, no wounds, no sore spots, ribs seem fine, no indication the kitty's been given fluids (like a shaved spot or mark) that I can find. the theory is the air will be absorbed over a week or so and the rice crispies will go away. so kitty will be staying in quarantine for a while. just wondering if anyone else has experience with this, or can think of another cause for the air under the skin?