What mentioned by Bozsik is almost write. Though, the photo is not so clear, but the cornicles, tubercles and cauda are evident to some extent. These characters in addition to branching of the median vein of front wing + the length and segmentation of antennae are among key characters to identify aphid species.
See around the habitat of this mammal and you will find the plant as well as the aphids. I mentioned the host plant because this is an important data in the identification.
the region that I had found this insect is Tipaza, precisely in humid area which characterized by very large forest with cork oak and others plants that presente humid region.
This is an aptera of a species probably in the genus Aphis (Aphididae: Aphidinae). To be more precise we need a host plant and much better images of key morphological features. To have an idea of the morphological characters that one should observe to make an identification, a key like this http://aphid.aphidnet.org/ is a good example.
Definitely an aphid! Note abdominal projections called cornicles. Only aphids have them. These suck plant juices. See: http://en.wikipedia.org/wiki/Cornicle
Regarding the comments statistically, the insect is an aphid (Aphididae). Aphids are plant sap feeders thus this individual might have been got by chance on the hare.
Ammam mentioned that “the region where she had found this insect is Tipaza (Algeria), precisely in humid area which characterized by very large forest with cork oak and other plants.”
Unfortunately, the habitat description is not sufficient. Also the scientific name of the hare is needed. It must be a Lepus europaeus? (Leporidae).
I repeat the photo’s quality is not suitable for further identification.
By the way, hares do not live in woods.
I mention: from veterinary point of view one or a dozen aphids on a hare have no significance.
Cet insecte est un puceron (Aphididae), pour une meilleure identification, vous devez prendre des photos plus claires sur la partie dorsale de l’insecte. Je vous conseille de contacter Mr. Laamari Malik de l’université de Batna , c’est un entomologiste spécialisé dans l’identification des pucerons en Algérie. Vous trouverez son nom sur researchgate.