I have tested with wyverns and yutys and this is what I discovered,
The first two roars inflict uneasy and the uneasy or frightened meter goes up but you can still control your wyvern. After three fear roars in a row your wyvern's uneasy meter becomes too much and it gets scared and flyes for the hills, but if you let the meter go down enough three roars not in a row shouldn't be a problem. Hope this helped :)
To know how much time need to the next feeding just do the next. Look the Food number# then that number multiply x 10, then divide /3600 and the result will be the number of hours until the next time need to be fed. F.E the food number is 1850.5 1859.5x10=18595 /3600 = 5.1 hours
Is it rare to get a two colored eye wyvern? I just got a poison wyvern who's left eye is green with a black pupil but the right is black with a green pupil. Plz answer this, it would really be helpful to know!
A fire wyvern is one of the best you can have because they are resistant to fire damage so alpha wyverns are much easier to kill same with all the wyverns they can't hurt each if they are the same element but the bite attack still works on all wyverns keep this in mind