MrWorfMen's Mom
Member Since 2015
If you aren't getting blood don't roll the ear but rather massage it up from his head toward the puncture site. It may take a few passes but gentle massaging will prevent bruising and coax rather than force a blood bead. His ears will learn to bleed better the more you test so be patient. It will get easier. 
Re weighing: I bought a digital baby scale too and it works really well for kitties. I monitor Teasel of course and also his brother who had to lose a little weight. Teasel goes on it no problem but his brother is very cautious - I had to teach him with treats that the scale wouldn't swallow him up!