It was on 3generation, it used to be the toddler that was a little raindrop, then it morphed into a teen that was all black and looked like it had a star at the tip of its antena or whatever that is.
It inst a glitch, I know that. Think of it this way, you only have 2 days left with it and then it has a baby. I wouldnt reset mine personally, even if it was that char.
Your tama has to be at the least about 75-80 pounds and you always have to press the middle button. To win all the game (usually) your tama has to be 99 pounds. ;)