Sentences with phrase «into estrus»

The Tibetan Mastiff has a cycle once a year similar to the wolf, but most breeds go into estrus twice per year.

A mature female wolf comes into estrus once a year.

An unspayed female dog will go into estrus twice each year.

Another interesting fact about this breed is that, like their wild ancestors, West Siberian Laika females only go into estrus once per year, generally whelping their puppies in the spring time.

This also sends the mother into estrus more quickly for repeated breeding.

This can occur between six and 12 months and smaller breeds may go into estrus sooner at five months.

Most women go into estrus monthly, releasing mature eggs which can be harvested and test - tube fertilized with sperm.

About 1 — 2 days into estrus, luteinizing hormone is released, causing the eggs to drop from the ovaries into a position when they can be fertilized.

Female cats may come into estrus within a few days of giving birth.

Females are sterlized if the aggression has not appeared before the first heat and if when the aggression appears is clearly associated with the entry into estrus, pseudopreganancy or preganancy, and the aggression reduces when these conditions are no longer present.

It is important to research breed specific testing prior to your bitch coming into estrus as some test may take 6 to 8 weeks for results.

Breeding is highly synchronous, with females coming into estrus during a three - week period from late November to early December, which coincides with the onset of the southward migration.

However, sterilizing male animals has no effect on whether or not the females go into estrus and attract males from afar.

Finally, when a female cat is about to go into estrus, more commonly known as heat, she will knead her paws to signal to male cats that she is able to mate.

For male cats this occurs around puberty, and for female cats it occurs around the time they go into estrus (heat) for the first time.

The smaller breeds tend to go into estrus or «heat» earlier and some females can have their first «heat» cycle as early as four months of age.

They will be buck magnets during the rut as the bucks cruise from one bedding area to another, checking for does coming into estrus.