6. Zebra Fish
Do you like to have a regenerating capacity for the heart? Sounds a pretty good idea? The zebrafish has this capacity. They are native to South Asia. Its regenerative ability has been a critical turning point of many scientists.
The zebrafish has half number of chambers compared to the human heart. But in their job they possess a similarity with human beings. The heart of the zebrafish delivers oxygen-rich ʙʟᴏᴏᴅ to all vital organs. The oxygen is made from the gills, not from the lungs. The reports say that this sort of fish got the capacity to regenerate the heart tissue.
The heart tissues get regenerated within a few months. These vertebrates also have a backbone, brain and spinal code like human beings. Apart from this, they have liver, heart, pancreas, kidneys, and bones as well. They widely studied in medical research labs for these similarities to humans.
When the heart of the organism beats irregularly, there is a high chance of getting ʙʟᴏᴏᴅ clots in the heart champion. Thousands of medicines now tested on these fishes. This is because of the resemblance with some native groups. Thus the scientific world is striving to find the exact reason beneath this.
Have you ever heard of an animal with three hearts? Yes, the octopus in the marine world holds this wonder. They are soft-bodied animals with eight-limbed mollusk attached to the body. Their soft body can change its size. It makes them able to travel through tiny openings. While swimming, they keep their appendages behind them.
The octopus got a complex nervous system and an excellent sight. Now comes the most attractive parts. Out of the three hearts, two of them dedicated for pumping ʙʟᴏᴏᴅ to their gills. The other one takes care of the entire region of the body.
The color of octopus’s ʙʟᴏᴏᴅ is blue. It is because unlike hemoglobin in human ʙʟᴏᴏᴅ they got a copper-rich protein called hemocyanin in ʙʟᴏᴏᴅ. This protein helps the oxygen transport duties of ʙʟᴏᴏᴅ, and it is also more useful in low oxygen environments of the sea.
The octopus spends more time crawling in the underground. It is because while swimming the heart powering body tires more quickly. Thus they prefer the regions of the seabed and coral reefs to crawl. Thus the sea monster of fairy tales, octopuses surprises us in the number of hearts and its various unique features.
8. Pygmy shrew
Pygmy shrew is a tiny mammal with fast heart beat rate. It is the second smallest mammals in the world. Generally, if the animal is small, the heartbeat will be fast. They belong to the native of Ireland. They also found in regions of Alaska, Canada, and the US.
The heart rate of the pygmy shrew is more than 1000 beats per minute. The target heart rate will always be 220 minus age. The tiny bird is active throughout the day and night. They got an average weight of 4 grams. The metabolic rate is higher meeting up the regular needs of the birds. The heart of the animal is large and constitutes 1.2% of the body mass. The highest metabolic rate of the bird is 1511 beats per second.
The birds do not usually hibernate because of their higher metabolic rate. These small birds do not rest for more than two seconds. Also, these short-range, high-speed hunters eat twice their weight. They get starved every two hours. They generally live alone and spend time in their habitat. The birds got a life span of one and a half years only. The tiny heart of their body supports their entire metabolism.
The giraffe is the tallest living terrestrial animal of the universe. It has got different special characters such as a long neck, long legs, and patterns. They found in South Africans and Somalia regions. The heart of this tallest animal has got some surprising features. The gravity is the biggest ᴇɴᴇᴍʏ of giraffes.
The heart-pumping of the animal to the head is always a matter of wide attention. The structure of the giraffe’s heart is well organized to support its entire needs. It is large and weighs higher than other mammals. The walls of its left ventricle are 7cm thick and beat thrice in a second.
The most important fact of the heart of giraffe is that it has higher ʙʟᴏᴏᴅ pressure, which prevents the animal from ꜰᴀɪɴᴛing down while lifting their head. It also allows the ʙʟᴏᴏᴅ to travel through the large body against gravity. The pressure of ʙʟᴏᴏᴅ makes it possible for arteries to reach ʙʟᴏᴏᴅ to head. The valves prevent the organs from ᴅᴀᴍᴀɢᴇ, specifically the brain.
The skin of the giraffe around legs is thick and tight enough. It helps to keep pressure against the gravity. Interestingly the principle of ʙʟᴏᴏᴅ flow in giraffe’s body was the basis for many inventions like pilot suits. Thus the powerful heart of giraffe makes them defeat the gravity and have a healthy life.
Cheetah is the unique cat, which is considered to be the fastest animal on earth. They appear in African regions and Iran. The critical feature of the animal is that its heart can beat up to 250 beats in a few seconds. The animal also has rich features such as slender body, spotted coat and small round head. It can reach up to the height of 70 to 90 cm.
This speed kings are capable of reaching speeds of 112 km per hour. Their average speed is about 64 km per hour. This speed helps them to catch their prey at a fast speed. The trademark of speed in the universe, the cheetahs, are capable of covering around sixty miles in three seconds. All this comes true by the powerhouse of their body. Yes, the extraordinary heart of the animal pumps ʙʟᴏᴏᴅ to the heart at a higher level.
Their long and flexible tail helps in changing directions when they run. When it covers 170 beats per minute, they will get exhausted and needs to cool down and rest. These animals especially the mother cheetah is always fearless and cunning. The male cheetahs are social and spend most of the times in small groups called coalitions.