I dunno. What's a Snausage? ; )
Average calories in a beef sausage, (Grilled, so the fat can escape), is around 250 calories per 100g. However it will depend on the butcher, the cheaper the sausage the higher the fat content as a general rule of thumb.
If you cant resist a sausage........... maybe try the veggie ones or chicken if you can get them. Pork tends to be fattier than beef at 300 calories.