Increasing the weight of LORA will effectively cut off the head of the two-legged sheep. The recommended weight is <lora:beforeafter-v1:0.75~8>.
Weights below 0.6 will preserve the character's head, but usually produce a slightly weird hair color.
Since there are still many unknown effects, that's all I know at the moment.

Currently known problems: Insufficient training samples lead to too high repetition rate of some composition styles.
It seems that it is difficult to produce two-legged sheep with extreme body shapes such as big breasts and poor breasts.
The color of uncooked raw meat does not have a keyword, which leads to instability (maybe a new concept entry will be made in the next version? Distinguish between cooked and uncooked concepts?).
I didn't specifically set whether the right picture of the two-legged sheep after has a head. I guess I have to set a new concept for training.
In the future, it will probably be necessary to increase the upper and lower limits of the milk volume of some training materials, and refine the design and combination of some concept words.
Try it out and give feedback.