I opened up this avocado yesterday and it was like this. I'm not sure if there's rooting going on, can't seem to see that far down. Can it be a possibility? I like to germinate avocado seeds in the hopes of an avocado plant. I know it won't produce fruit but the plant itself is beautiful. I have about 5 soaking with the toothpick method right now, including this one.

Also my heating mat came in, can I place the avocados on it? Will it help to germinate them?