Human hormones vs animal hormones

[masterducky]

Are they the same?

Are hormones universal or are they species specific?

For example a growth hormone of one animal has the same effect on every other animal and human?

On the net i only found wikipedia talking about "List of Human Hormones".
That would imply that they are not the same.

If its the case then why are they talking about growth hormone in milk (intended for baby cow) affecting humans?

[RawZi]

If its the case then why are they talking about growth hormone in milk (intended for baby cow) affecting humans?

    I heard that specifically in the case with cow and human growth hormone, the two are the same.

[masterducky]

See, once again its the case where we here a lot of things but there isnt any proof or test on the matter.

I probably ask these questions on a medical or a vet forum.