Jennifer Geer
Author for A-Z Animals

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Jennifer Geer is a writer at A-Z Animals where her primary focus is on animals, news topics, travel, and weather. Jennifer holds a Master's Degree from the University of Tulsa, and she has been researching and writing about news topics and animals for over four years.

A resident of Illinois, Jennifer enjoys hiking, gardening, and caring for her three pugs.


Domesticated Picture

A domesticated plant or animal has been genetically modified over generations by humans to cultivate traits that are more desirable or favorable for humans.  Summary Domestication is when humans adapt wild plants or animals… Read More

By Jennifer Geer 2 years ago


Phylum Picture

Phylum is a classification of major groups of animals or plants that share fundamental traits or evolutionary relatedness. Phylum is the level of classification below kingdom but above class. It is a… Read More

By Jennifer Geer 2 years ago


Fertilization Picture

Fertilization is the process of the fusion of male and female gametes to form a zygote. The zygote is the first cell that will become the new individual. Fertilization occurs… Read More

By Jennifer Geer 2 years ago


Lifestyle Picture

Lifestyle is the typical way of life for a person or group of people. In animals, lifestyle is the living conditions, behavior, and habits that are usual for them in… Read More

By Jennifer Geer 2 years ago


Plant Types Picture

All plants belong to the kingdom Plantae. Within this kingdom, plants are in two types: nonvascular and vascular. Within the vascular category, plants are further divided into spore-producing and seed-producing, while all nonvascular plants… Read More

By Jennifer Geer 2 years ago


Oviparous Picture

Oviparous animals reproduce by laying eggs instead of embryonic development occurring inside the mother. Summary In oviparous animals, fertilization can take place internally or externally, while embryo development always occurs outside… Read More

By Jennifer Geer 2 years ago


Pupa Picture

Pupa is the life stage of an insect that goes through a complete metamorphosis. Pupae is the plural form of the word. Pupa is the life stage of an insect… Read More

By Jennifer Geer 2 years ago


Metamorphosis Picture

Metamorphosis is a series of abrupt physical changes some animals and insects go through to become adults. Summary The word metamorphosis comes from the Greek word, metamorphose, which means "change of… Read More

By Jennifer Geer 2 years ago


Number of Species Picture

Scientists have estimated the number of species of plants and animals that currently exist on Earth to be around 8.7 million. However, this number is just an estimate as it is incredibly difficult to count… Read More

By Jennifer Geer 2 years ago


Nocturnal Picture

Nocturnal animals are active during the night and sleep during the day. Summary Animals that sleep during the day (nocturnal) have developed enhanced senses of hearing and smell. They also… Read More

By Jennifer Geer 2 years ago


Metabolism Picture

Metabolism is the chemical reaction in the body's cells that transform food and drinks into energy that fuels body functions. Every living thing has a metabolism, including humans, animals, and… Read More

By Jennifer Geer 2 years ago


Name Of Young Picture

Baby animals, also known as offspring, are referred to by different names than the adults in their species.  Summary You don't often hear someone call a puppy a "baby dog."  Baby animals are… Read More

By Jennifer Geer 2 years ago


Keratin Picture

Keratin is a tough and insoluble fibrous protein found in animal cells. In animals, it forms the structure of hair, fur, feathers, nails, hooves, horns, claws, and scales. What is Keratin?… Read More

By Jennifer Geer 2 years ago


Horn Picture

Horns are permanent projections on the head of various hoofed mammals. They are composed of a bony core covered by a sheath of keratin.  Horns are permanent projections on the… Read More

By Jennifer Geer 2 years ago


Dewlap Picture

A dewlap is a fold of loose skin hanging from the neck or throat of an animal. What Is a Dewlap? Dewlaps hang from the necks of certain species, including mammals, birds,… Read More

By Jennifer Geer 2 years ago


Home Range Picture

The home range of an animal is the physical area where the animal spends its time on daily activities such as obtaining food, seeking shelter, and finding mates. Summary of… Read More

By Jennifer Geer 2 years ago


Conservation Status Picture

Conservation status is a category assigned to an animal or plant species to reflect whether or not the group is threatened or at risk of extinction. Many factors determine conservation status,… Read More

By Jennifer Geer 2 years ago


Delayed Implantation Picture

Delayed implantation, also called embryonic diapause, is when mammals pause their pregnancies until conditions are better for the survival of their offspring. During delayed implantation, the blastocyst embryo does not implant… Read More

By Jennifer Geer 2 years ago


Cloven-hoofed Picture

Cloven-Hoofed Meaning A cloven hoof, also known as a cleft hoof, split hoof, or divided hoof, is found on animals belonging to the Artiodactyla family.  Scientists divide hoofed animals into two groups:… Read More

By Jennifer Geer 2 years ago


Common Name Picture

A common name of an organism, also known as a vernacular name or English name, is the name that is typically used in everyday life. Additionally, scientists give organisms scientific names in… Read More

By Jennifer Geer 2 years ago


Carnivore Picture

A carnivore is a meat eater. It's an organism that gets nutrition from eating other organisms. Carnivores can be hunters or scavengers. Summary Carnivores are a significant part of the food… Read More

By Jennifer Geer 2 years ago


Camouflage Picture

Camouflage is defined as a defense mechanism or tactic that animals use to disguise themselves by blending in with their surroundings. Animals use camouflage to help them survive by hiding from either predators… Read More

By Jennifer Geer 2 years ago


4 Types of Carcinoma in Dogs Picture

It's not something pet owners want to think about, but dogs get cancer at about the same rate as humans. It's helpful to know there are treatments available for your pet. And even better,… Read More

By Jennifer Geer 2 years ago


Discover Every Type Of Lovebird Picture

Lovebirds, also known as "pocket parrots," are one of the smaller members of the parrot family. The scientific name for the lovebird is Agapornis. Lovebirds, native to the African continent, are popular as companion… Read More

By Jennifer Geer 2 years ago


6 Facts About Baby Chinchillas Picture

Chinchilla babies are undeniably adorable. Native to the Andes Mountains in South America, chinchillas are endangered in the wild. There are two species of chinchillas: Chinchilla lanigera and Chinchilla chinchilla. Chinchillas were hunted extensively in the 1700s… Read More

By Jennifer Geer 2 years ago


8 Facts About Baby Leopards Picture

Leopards are fierce and formidable predators as they stalk across the African grasslands. But as babies, they may be the most adorable fuzzballs ever to be found wandering around the African savanna. Leopards… Read More

By Jennifer Geer 2 years ago


Baby Bison Picture

When you think of cute baby animals, you probably don't imagine one that weighs 70 pounds. But that's how big a baby bison can be at birth! Although it shouldn't… Read More

By Jennifer Geer 2 years ago