research! research! read all about it

[kay_mulan]

https://www.vice.com/en_uk/article/8xdeqv/so-you-want-to-buy-a-tiny-dog-with-a-giant-head

https://www.psychologytoday.com/us/blog/canine-corner/201603/dogs-size-and-head-shape-predicts-its-behavior

https://www.unilad.co.uk/animals/everyone-needs-to-stop-buying-small-dogs-with-big-heads-heres-why/

http://www.smartdogguide.com/small-dog-breeds-the-ultimate-resource-guide/