Check the position of the birth mark or the colors of their eyes, if they are twins, I usually check who is the more sensitive or protective.If this doesn't work, ask your vet to micro chip him or her.
Since Cantonese is spoken in the same way in both Hong Kong and Macau, it is not possible for Hongkongers to tell themselves apart from the Macanese. The best way to determine whether someone is Macanese or not is to ask him or her!
For the average human viewer there appears to be little way to tell a Pill Bug apart but they do have markings on there backs which can allow them to be told apart.
Tell yourself to move on and that death is apart of nature, everyone will die eventually, and we all must accept it
How about remembering "y goes to the sky" since the y-axis is the vertical axis.
No they don't. This is a way to tell them apart from humans.
Taxonomy
The easiest way to tell apart a ragdoll and Birman cat is through the markings. A birman cat has distinct markings.
If you are looking to purchase navman gps maps the best way to tell them apart from other gps maps is to go to www.navman.com.au and download the maps from there. This will insure you are downloading the correct map format for your navman. As for the way they look compared to other gps maps, they all look basically the same so it is difficult to tell them apart by looks alone.
monkeys have tails
The easiest way to tell a Hovawart and a Golden Retriever apart is by the hairs on the chest, belly, and tail. The Hovart has longer hair than the Golden Retriever.
Only monkeys have tails
well you do need a way to tell them apart...