Italian Renaissance Art. Florence (Quattrocento), Rome and Venice (Cinquecento). A-Z of ART MOVEMENTS. The Dome of Florence Cathedral, designed by Filippo Brunelleschi. (1377-1446), was a public symbol. of Florentine superiority during. the early Italian Renaissance.
How to Tell when a Cow or Heifer is in Estrus. Estrus is defined as the period where a female (in this case, a cow or heifer) is receptive to a male (or, the bull). Estrous, on the other hand, is the whole reproductive heat cycle that a female goes through, from heat period to no heat period (Proestrus, Estrus, Metestrus, and Diestrus).
When estrus occurs, animals are said to be in heat or in season.. 1  Cats: Cats normally have their first estrous cycle between 4 and 6 months of age, with the average age around 5 months. 2  The female cat has 2-4 estrous periods every year, each lasting 15-22 days. 3  If she is bred, estrus seldom lasts more than 4 days.our animal should be in good health when she or he goes in for surgery. If you have a sick cat or dog, you should speak with your vet about treatment. Other pet owners in your area may know of a good, reasonably priced vet.