animal care |

animal care : "The Happy Purr of a Cat
All domestic cats are born with the purring ability. A queen will purr while giving birth. It is unknown whether this is because of happy anticipation, or whether it is a relaxing 'mantra.' Kittens instinctively purr when nursing, and the momcat purrs right back at them. Your adult cat will purr at the drop of a hat whenever you're near, and especially when you are holding or petting him.
Cat purrs will range from a deep rumble to a raspy, broken sound, to a high-pitched trill, depending on the physiology and/or the mood of a cat. A cat will often 'wind-down' when going to sleep, with a long purring sigh that drops melodically from a high to a low pitch. Does your cat's purr sometimes sound like an idling diesel engine? That's because at the lower range of 26 Hertz, the velocities are nearly the same.
The Healing Power of the Purr
Cats are often used as 'therapy animals' in convalescent hospitals, or in retirement residences. It is an accepted fact that cat owners have lower blood pressure, especially in older people. The human-feline bond is never quite so close as when a person is holding and petting a purring, vibrating bundle of fur on her lap, and all is well with the world. You may even find yourself purring in response."

animal care |

animal care : "The Physiology of Purring
There seems to be two schools of thought here.
The most popular one is quoted here:
One study determined that purring involves activation of nerves within the voice box. These nerve signals cause vibration of the vocal cords while the diaphragm serves as a piston pump, pushing air in and out of the vibrating cords, thus creating a musical hum. Veterinarian Neils C. Pederson, author of Feline Husbandry, believes that purring is initiated from within the central nervous system and is a voluntary act. In other words, cats purr only when they want to.²
The other theory is that the sound comes more from vibrating blood vessels than in the voicebox itself. "

animal care |

animal care : "Feed me!
Remember the Dr. Seuss book about the fish who was overfed? Although you probably won't wake up with a gigantic fish on your staircase, overfeeding can lead to health problems. Feed your fish only as much as they can eat in about three minutes, and then feed them that amount one to two times per day. Although they look like they are still hungry, much of the food will fall to the bottom of the tank. When this food is left to decompose it leads to problems with water cleanliness.
Variety is the spice of life, and your fish wants a piece of the action. Think of fish flakes as you would rice: okay as a staple, but awfully boring day in and day out. Just as you would add veggies or meat to your rice dish, add live worms as well as frozen and freeze-dried foods to your fish's diet. But be careful! Fish can get fat, and if you feed Wanda an excess of protein-rich foods such as bloodworms, you'll have a happy but fat fish on your hands. Beware of flake food that is old or has been left open and become damp-it will have less nutritional value. "

animal care |

animal care : "Gadgets for the tank
To heat or not to heat? Whether you will want to invest in a heater depends on where you live and what types of fish you have. Generally, goldfish and koi do not need a heater. But you will need a heater for any fish requiring water that is warmer than the natural room temperature. Heaters often fail, so invest in a heater of good quality and monitor the tank daily to avoid cooked or frozen fish.
An air pump is generally deemed a good thing: It helps avoid thermal layering, prevents film from forming on the top of the water (which inhibits the carbon dioxide/oxygen exchange), and it helps the good bacteria to grow. It is also a good idea to include foliage, rocks, or another type of cover. Although this really depends on the fish, most fish will strongly appreciate the chance to get out of sight.
You will need a filter for your tank as well, and a good one usually comprises the three types (biological, mechanical, chemical) available. At the very least, a biological filter is necessary as it helps break down the nitrites and ammonia into the more benign nitrates. All filters need to be cleaned regularly. "

animal care |

animal care : "Remember the goldfish from grade school? You won them at a fair, brought them home to a bowl full of water, loved them with all your heart-and they died. Although fish aren't really hard to care for, if you don't know a few basic facts you can doom the critters before they ever really have a chance. Keeping your scaly pet alive and swimming isn't a fishy matter, so read on for the watery basics.
Relocating
It's a good idea to set up your tank and let it sit for a week before you anticipate putting Wanda into her new home. This gives the water a chance to dechlorinate and gives the 'good' bacteria (we'll talk about this later) a chance to grow. The absolute minimum for tank size is ten gallons; with anything smaller, you will have problems maintaining stable water chemistry and controlling temperature fluctuations.
When Wanda arrives at her new home, she'll be a little apprehensive about the impending switch to new waters. You can ease her fishy qualms by making the transition a gradual one. Float Wanda's bag in the tank for a while to let the temperatures equalize. Then slowly begin adding small amounts of tank water to Wanda's bag; continue for about an hour before you transfer Wanda to her new home. Avoid mixing the old bag water with the new tank water-you can't be sure what kinds of parasites you have brought home in the bag. "