Yoyos are classified by shape and the 3 are: 1) "Classic", also known as "Imperial" - These have been around the longest and include the Duncan 'Imperial', Duncan 'Speed Beetle', and the Team Losi 'Da Bomb'. They are best for looping tricks. 2) "Butterfly" - These are probably the most popular today and include the Duncan 'Butterfly', Henry's 'Viper', and Yoyojam 'Spinmaster'. They are best for string tricks and long spin or "sleep" times. Really complicated string tricks are almost always performed using a butterfly shaped yoyo. Butterflies are not considered to be the best starter yoyos. 3) "Modified" - These have rounded edges and are a good compromise between imperial and butterfly shapes. Good examples are the Duncan 'ProYo', Yomega 'Fireball', and the Spintastics 'Technic'. They loop well and are better than the imperial for string tricks. The modified shape is also considered to be a great beginners yoyo. Many other factors come into play such as materials, axel construction, weight, size, etc, but these are the 3 shapes, or "types" of almost all serious yoyos.
Generally the three types of yo-yos are the imperial yo-yos, which are used mainly for the execution of looping tricks in the 2A style of play and for sleeping yoyo tricks. They either have a convex shape on the outside or just a plain surface on on side with a small gap between the other etc. yomega fireball, duncan profire. Then there are butterfly shaped yo-yos which are used to perform advanced string tricks as the yo-yos have a concave shape on the outside and there is wide gap between the two halves of the yo-yo for easily landing the yo-yo into the groove of the string in 1A, 3A and 5A and last but not least there is an offstring yo-yo which has butterfly shaped body for easily landing the yo-yo on the string and has rubber rims which are almar durable.
The 3 types of yoyos are: the classic shape the modified shape(moth shape) the butterfly shape
i believe that yoyos eat dog poo
yes They do sell Yoyos
yes
no
alot
of course there a Chinese yoyos in japanica, silly :P china and japanica are like this (crossed fingers)
metal
YOYOS
sure... why not?
They are very cheap.
no as a hunting weapon