depends... but due to well being bred for herding they will sometimes nip their owners.
no dog is aggressive unless you make it aggressive. :-\ if you mean a border collie then it will only become aggressive if it is bored. if you are planning on getting a border collie make sure you have stuff to entertain it with.
Um i am not quite sure on this, but i think they might not get along. Even though collies are great pets and are gentle, Chihuahuas can get aggressive (hard to believe) . But, if you get them both around the same age(puppies) they will grow up together and might like each other. Hope i helped. :)
border collies no no
like border collies
No!, Border collies are the smartest dogs in the world!
yes he is a HUGE fan of collies
There are only rough collies and smooth collies. Some people call shetland sheepdogs minature collies, but they aren't.
"Mini collies" or "miniature collies" are not a recognized breed. There is a breed called a Shetland Sheepdog, which is often referred to as a miniature collie because of its resemblance to the Rough Collie. Shetland Sheepdogs are a separate breed from collies.
Usually collies can be kept anywhere in the world as long as they are cared for!
Bearded Collies are 51 - 56 cm tall.
No, collies do not hibernate (become partially dormant over the winter)
Border Collies can be 46 - 48 cm tall.