Porcupines are an interesting class of skew-products, constructed by an non-contracting IFS over a horseshoe. In the work of Diaz and Gelfert an interesting spectral properties (including spectral gap and phase transitions) was shown in a class of porcupines. I'm going to present another class, with even more interesting behaviour. It's a joint work with Lorenzo Diaz and Katrin Gelfert.