Animals Definition and 156 Threads

In this BBC video about the Azores Dr. Felix Rodrigues tells us four legged animals can't drink from beneath their feet. I've never heard of this before and couldn't find anything about it. Does anyone know about this and/or where I can find out more about it? Google didn't help.

Apparently orcas are learning killer ways. https://www.livescience.com/animals/orcas/orcas-have-sunk-3-boats-in-europe-and-appear-to-be-teaching-others-to-do-the-same-but-why

I am not sure exactly which subforum this should be put into, and not sure what title to give this topic, but this video is interesting, called What animals are thinking and feeling and why should it matter. The video's link: .. .. Okay, some time passage, and I watched several more...

My wife read an article last night about an outbreak of hemorrhagic fever in rabbits, and it has been passing through populations throughout the US. So, I decided to look into it and came across a wildlifehealth.org. There is a lot of nasty stuff out there. Detection of High Pathogenic Avian...

Does every species get its own 5.5%-calibrated sievert? It's morbid to ask, I know, but given that Chernobyl is full of dogs I have to ask whether there is such a thing as a dog-sievert?

We've known that Sars-Cov-2 can be transmitted from humans to a wide range of animals. Now we are learning that it has widely spread through deer populations. https://gizmodo.com/uh-oh-the-coronavirus-has-been-spreading-widely-in-u-s-1847999600 Have we ever observed this kind of thing...

Recently I saw a video from a Christian creationist who was trying to debunk evolution with an argument that if evolution gives us new species all the time why would we make an effort to preserve those that are going extinct. So I was thinking a little bit about it and these are my conclusions...

https://phys.org/news/2021-04-billion-year-old-fossil-reveals-link-evolution.html I used to have some literature on ancient single cell organisms, but I haven't seen it in decades. https://www.cell.com/current-biology/fulltext/S0960-9822(21)00424-3 Sediments of the Torridonian sequence of...

The green-banded broodsac, a parasitic flatworm, is said to parasitise the eye stalks of snails, and through imitating a caterpillar attracts the attention of a bird. But how does it know what a caterpillar looks like, if it doesn’t even possesses complex eyes? Flatworms have primitive eyespots...

Do any animals see in a spectrum other than visible light and infrared?

https://www.cnn.com/2020/03/23/world/animal-ancestor-ikaria-scn/index.html Here is a link to the original article, but it's behind a pay wall. https://www.pnas.org/content/early/2020/03/17/2001045117 Cheers, Tom

So I am writing a campaign for dungeons and dragons, and I have just started putting together a part of the setting in which a kingdom was shrunk about 2000 years prior, and stored in a small container. The upshot of this (by my own authority as the author) is that time travels about 10 times as...

I've been watching an interesting nature program on Netflix called Night On Earth. The film was all taken at night using low light and infrared cameras. I was surprised how many animals and insects see well at night. It makes me curious. Do we know how much of the infrared spectrum...

I just found this insect and I don't know what is it. It seems to be the larva of a fly or maybe a little butterfly. I live in Spain so it is fall. What should I do with it?

Multicellular animals (metazoans) are thought (based upon molecular divergence data between metazoanas and chanoflagellates) to have initially evolved about 720 MYA, at beginning of the Cryogenian (720-635 MYA). These first pre-metazoans are assumed to have started out very small with no hard...

We see complex animals such as crabs living near deep sea volcanic vents. (Reference: https://ocean.si.edu/ocean-life/invertebrates/hydrothermal-vent-creatures) This is causing speculation that similar life may be living near deep sea volcanic vents on other world such as Europa. Did these...

Many domesticated animals like dogs and cats get matted fur and humans take measures to un-mat it. Generally speaking, do non-domesticated animals get mats in their fur? - or are they adapted not to get them or remove them? If they do get mats, are the mats harmful?

When in history did our reward system develop, in order to ensure human reproduction? And what drives lower animals to reproduce? Instinct The reward is the survival of the lineage. but do animals know this as well? Do they have some kind of consciousness that they (well, actually not them...

According to a paper published back in March, humans see the world with a much higher visual acuity compared to other animals. Cats, for example, have roughly 1/6th the visual acuity of humans, and fruit flies have roughly 1/100th. A few animals do better than ourselves, namely eagles, hawks...

Hi everyone Are brainless animals such as jellyfish and starfish capable of learning (for example by classical conditioning)? I would have thought not, but apparently there are plants that are capable of learning...

Hello. I know that many humans have lifelong goals, like becoming an engineer, winning the Nobel Prize or something. But do animals have the same? I understand that the goal of all living things is to give a successful and prospering offspring, but do animals and living things other than us have...

It is well known that, when castrating a rooster it, it won’t be able to exhibit certain male traits (called a ‘capon’). The opposite is also true, when for instance a lioness is injected with testosterone, it will exhibit male traits. Are there more examples known of comparable results, but...

I have a project and in that project I'll count the wild life animals from a drone. I need to find a drone that doesn't make much sound also (maximum 60-70 dB), it must capable of a flight time 30 min and also can carry a IR camera. I find a drone callled Phantom 4 (Advanced or Pro)...

A documentary on chaos talked about the macro behavior of flocks of birds and schools of fish. They appear organized, but without central command. The documentary said that this is an example of complex behavior arising from simple rules plus chaos. It compared them to the Mandelbrot set...

It is true that big animals contain more calories than small animals. However, are the figures for the content of essential nutrients that are not calories different? Such nutrients may be limiting factors and require foraging strategies that would be suboptimal from a simple calory point of...

What is the current habitat range of Turritopsis dohrnii or the "immortal" jellyfish? I know that there are multiple species of the Turritopsis genus and that the species dohrnii have recently increased its range by ballast water spread. What is the current range of the exact species dohrnii?

https://en.wikipedia.org/wiki/List_of_English_terms_of_venery,_by_animal Lists lots of animals. Clearly people made up some of these things when it was clear nobody really knew if it was correct or not. Heck, we can do that! So let's see what we can come of with: How about a slime of...

Is there a biological consensus about why some species live so much longer than other species? You can sort of understand aging as a matter of the body just wearing out with time. But that doesn't explain why, for instance, dogs go through a similar aging process as humans (gray hair, arthritis...

Since cold-blooded animals, such as lizards, turtles, &c., take on the temperature of their environment, can we expect them to linearly and volumetrically expand/shrink in warmer/cooler environments? In addition, can we expect them to follow the simple equation: ΔV=βV0ΔT, for some volume...

Scientists found a virus that is made out of 4 to 5 separate components - it infects mosquitos, and they have to catch at least four of those components to get infected, the smallest, fifth component is optional. For plants and fungi, similar viruses were known before, but (at least according...

Animals get wet in the rain and still don't fall sick, how is that?. Let's take a stray dog. I have noticed that a dogs nose keeps running and he has to breathe though the mouth. So his immune system has some flaws. Can a human being become so immune just like animals? Tarzan had good imunity...

Do animals also fall in love? But first.. what is the difference between "in love" and "love?

Dear PF Forum, Lately I've been watching this channel https://www.youtube.com/user/cassiopeiaproject It's a very good science channel And I've been wondering about this one thing. The origin of animal At first, "life" couldn't do photosynthesys (what ever that we call "life") And at 3.4...

Summer is almost here and people tend to spend more time outdoors. That is very pleasant and most of us enjoy the sun and warm weather. But there may also be some dangerous creatures, especially in some areas. What are the most common dangerous, venomous or parasite animals in your area? In my...

This may be an odd question, but it's popped up in many conversations. I know that they die because, aside from losing their stinger, they suffer abdominal rupture too severe to survive. However, it's always seemed odd that they sting out of fear of danger and getting hurt, but they die...

In the news recently, Filipino boxing star, Manny Pacquiao, spoke of homosexuality as being a sin and against the Bible. He also added that animals did not display such behavior: "It’s just common sense. Have you seen any animal having male-to-male or female-to-female relations? Animals are...

Is there any research that was done on animal long and short term memories? And short of empirical analysis, if there is none, is there much we could conclude, based purely on what we know about their brains? For example, from knowing which brain parts deal with explicit and which with...

Firstly, I'm new to these forums, and I'm not sure what the prefixe in creating this thread is supposed to be... (i'm assuming it is to judge to question's level)? saw some threads without prefixes but i can't post one without... maybe i missed a stickied thread or a readme? Alright, so, first...

klotza submitted a new PF Insights post Scaling Laws and the Speed of Animals Continue reading the Original PF Insights Post.

I am writing story about Earth set 1000 years in future and I am looking for good example of living animals. So far I had wolves or dogs on my mind, how would they change in 1000 years?

I have noticed that cheetahs, peregrine falcons, and sailfish have similar mitochondria as far as amount of base pairs, genes, RNAs, and proteins. Cheetahs have in their mitochondria 17,047 base pairs, 13 genes, 24 RNAs, and 13 proteins. Their speed is up to 75 mph with their acceleration being...

Which of the following is correct 1-Elephant has the largest heart among all terrestrial animals. 2-Giraffe has the largest heart among all terrestrial animals. I have read somewhere that elephant has the largest heart among all terrestrial animals.But now I have seen a book where it is written...

I just gave. Give what you can, even a dollar one time it's a single meal. Do what you can when you can, there is no obligation. It's just a one time gift. https://www.aspca.org/secure/donate?linked=1 Please help if you can, if you cant, tell others.

Given the greater pressure underwater, i.e. at the bottom of the ocean, to survive there youd think that those animals would have stronger/denser bones, but we find that land animals have denser bones to withstand the higher net weight (gravity). But that seems counter intuitive because...

While humans are scientifically classified as animals, we frequently see ourselves as being something different from the animals. Why is this?

Can some animals be trained to « read » captchas the way they can be to recognize print letters?

I like animals,my hobbie is drown animals. I used to draw portraits of dogs, cats, parrots ... here are some pictures of me. I draw and print up some http://marioboyshop.blogspot.com/search/label/T-shirt%20For%20Women looks very cute. Here are some pictures that I drew.

Homework Statement An old fox resting near a road sees a mouse that is traveling at a speed of 1.3 km/h. At the moment the fox sees the mouse , it starts chasing after it . The fox's acceleration is 0.45 m/s^2. a) how much time is elapsed between when the fox start's to when the mouse is...

If I'm not wrong, several species of animals, for example those living in dry areas of Africa, have the ability to find water many kilometers away. They may be in a dry area with no water around, and say, the nearest small dwell 20 Kms away in North direction, and somehow they can orientate...

Question Summary: Do you think human evolution worked in the same way as other living things have evolved through natural selection? Don't you think the human evolution occurred faster than that of any other animals? And humans have possessed too many characteristics ( especially those of...